Q&A Hero

Q: Find the equation for the line pictured.Write your answer in slope-intercept form.

Q: Assuming that the line through the given two points has the given slope m, find the value of t. (-6,-58) and (t,-88); m = 10

Q: Assuming that the line through the given two points has the given slope m, find the value of t. (8,8) and (10,t); m = 1

Q: Suppose the slope of a line is 7 and the line goes through the point (3, 20). Find the values of a, b, and c if points (a,-43), (b,-36), and (c,-99) are on the line.

Q: Suppose the slope of a line is -5 and the line goes through the point (-6, 25). Find the values of a, b, and c if points (-1,a), (0,b), and (-10,c) are on the line.

Q: Find the equation of the line for the following set of conditions.The the line passes through the points (-5,34) and (4,-11).Write the answer in slope-intercept form, .

Q: Find the equation for the line through the points (-6,1) and (3,1).Write the answer in slope-intercept form.

Q: Find the equation of the line for the following set of conditions.The slope is -4 and the line passes through the point (3,-6).Write the answer in slope-intercept form, .

Q: Graph the line with a slope of and goes through (2, -3).

Q: Which of these equations has the steepest slope? A) y = 2 + 4x B) y = 2 - 8x C) y = 5 + 5x D) y = 2 - 6x

Q: Which equation has the same slope as y = -4 + 8x? A) y = -4 + 4x B) y = -8 + 4x C) y = -8 + 8x D) y = -4 - 8x

Q: Construct the equation for this graph.

Q: Construct an equation of the form y = b + mx, with slope = -6 and vertical intercept = 0.

Q: Construct an equation of the form y = b + mx, with slope = 0 and vertical intercept = -2.

Q: Construct an equation of the form y = b + mx, with slope = 4 and vertical intercept = 2.

Q: Which graph has a slope of ? A) B) C) 5 D)

Q: Which function pictured has the largest vertical intercept? A) A B) B C) C

Q: Which function pictured has the largest vertical intercept? A) A B) B C) C

Q: Which function pictured has the largest slope? A) A B) B C) C

Q: Which function pictured has the largest slope? A) A B) B C) C

Q: Which function pictured has the largest slope? A) A B) B C) C

Q: Which function pictured has the largest slope? A) A B) B C) C

Q: Which function's graph has a steeper slope? A) B)

Q: Which function's graph has a steeper slope? A) B)

Q: Which graph below is the graph of a linear function, , with b negative and m positive? A) B) C) D)

Q: Which choice best describes the function, , whose graph is pictured? A) m is negative and b is positive. B) m is negative and b is negative. C) m is positive and b is negative. D) m is positive and b is positive.

Q: Which choice best describes the graph pictured? A) The slope is negative and the vertical intercept is negative. B) The slope is positive and the vertical intercept is negative. C) The slope is positive and the vertical intercept is positive. D) The slope is negative and the vertical intercept is positive.

Q: The attendance at a band's concerts has been steadily increasing, in March their concerts averaged 2,300 people and the attendance has increased 160 people each month. A) Find a linear equation that describes the statement. Write your answer in slope-intercept form, , in terms of the concert attendance, A, and months since March, t. B) Use your function to find the band's average attendance in August.

Q: The attendance at a band's concerts has been steadily increasing, in March their concerts averaged 1,900 people and the attendance has increased 200 people each month. A) Find a linear equation that describes the statement. Write your answer in slope-intercept form, , in terms of the concert attendance, A, and months since March, t.

Q: A company purchases a piece of machinery that is initially worth 10,000 dollars and its worth decreases 600 dollars each year. Estimate how many years it will take for the value of the piece of machinery to drop to $5,800.

Q: A company purchases a piece of machinery that is initially worth 25,000 dollars and its worth decreases 700 dollars each year. A) Find a linear equation that describes the statement. Write your answer in slope-intercept form, , in terms of the machinery's worth, W, and years since purchase, y. B) Use your function to find the machinery's worth 3 after being purchased.

Q: A company purchases a piece of machinery that is initially worth 25,000 dollars and its worth decreases 600 dollars each year. Find a linear equation that describes the statement. Write your answer in slope-intercept form, , in terms of the machinery's worth, W, and years since purchase, y.

Q: A car starts traveling at 5 mph and its speed is increasing by 6 mph each minute. A) Find a linear equation that describes the statement. Write your answer in slope-intercept form, , in terms of speed, s, and time (in minutes), t. B) Use your function to find the speed, in miles per hour, of the car after 5 minutes.

Q: Find a linear equation that describes the statement. A car starts traveling at 20 mph and its speed is increasing by 6 mph each minute Write your answer in slope-intercept form, , in terms of speed, s, and time (in minutes), t.

Q: Find the equation of the line for the following set of conditions. The slope is 3 and the line passes through the point (0,9). Write your answer in slope-intercept form, .

Q: The function, , gives the speed (in miles per hour), s, of a car at time t minutes. Evaluate s(2).

Q: The function, , gives the speed (in miles per hour), s, of a car at time t minutes. Find the speed (in miles per hour) of the car at time 3 minutes.

Q: The function, , gives the weight (in ounces), w, of a cat that is a years of age. Evaluate w(7).

Q: The function, , gives the weight (in ounces), w, of a cat that is a years of age. Find the weight (in ounces) of a 7-year old cat.

Q: The amount of money spent on food (F) each month for the average household is F(c) = 344.05 + 93.07c. Where c is the number of children in the household. Estimate the number of children in a household that spends $809.40 per month on food. (Round the answer to the nearest whole number.)

Q: The amount of money spent on food (F) each month for the average household is F(c) = 348.71 + 93.65c. Where c is the number of children in the household. Estimate the monthly food expense for a household with 5 children. (Round the answer to 2 decimal places.)

Q: When there is a 10 mile per hour wind, the wind chill, W, is given by the function , where T is the air temperature (in degrees Fahrenheit). Find the wind chill with a 10 mile per hour wind and a -13 degree Fahrenheit air temperature. (Round the answer to 3 decimal places.)

Q: A used car salesman earns a salary, S, of $200 per week plus a commission of $55 for each car he sells, c.. A) What is the dependent variable? B) What is the independent variable? C) Find a mathematical model that gives weekly salary, S, as a function of number of cars sold, c.

Q: The function, , gives the annual salary, S (in dollars), of a teacher with y years of experience. What are the units of the 1,150 in the formula? A) dollars B) dollars per year C) years D) years per dollar

Q: The function, , gives the annual salary, S (in dollars), of a teacher with y years of experience. What are the units of the 34,000 in the formula? A) years B) dollars per year C) dollars D) years per dollar

Q: The function, , gives the annual salary, S (in dollars), of a teacher with y years of experience. What are the units of the 38,000 in the formula?

Q: The function, , gives the speed (in miles per hour), s, of a car at time t minutes. What are the units of the 4 in the formula? A) miles per hour per minute B) minutes C) miles D) miles per hour

Q: The function, , gives the speed (in miles per hour), s, of a car at time t minutes. What are the units of the 45 in the formula? A) miles per hour per minute B) minutes C) miles D) miles per hour

Q: The function, , gives the speed (in miles per hour), s, of a car at time t minutes. What are the units of the 30 in the formula?

Q: The function, , gives the weight (in ounces), w, of a cat that is a years of age. What are the units of the 19.2 in the formula? A) ounces per year B) ounces C) years D) years per ounces

Q: The function, , gives the weight (in ounces), w, of a cat that is a years of age. What are the units of the 3.5 in the formula? A) ounces per year B) ounces C) years D) years per ounces

Q: The function, , gives the weight (in ounces), w, of a cat that is a years of age. What are the units of the 3.9 in the formula?

Q: A) Rewrite the equation in slope-intercept form, , and then identify B) the slope and C) the y-intercept.

Q: Identify A) the slope and B) the y-intercept.

Q: Identify A) the slope and B) the y-intercept.

Q: Determine whether the following data is linear. x y -3 1 -1 -5 0 -2 2 16 3 31 A) No; it is not linear. B) Yes; it is linear.

Q: Complete the table for the function M = 11 + 12d. M 9 13 17 21 25 d

Q: The attendance at a band's concerts has been steadily increasing, in March their concerts averaged 2,400 people and the attendance has increased 100 people each month. Estimate in which month the bands attendance will reach 2,700 people.

Q: The following graph shows the percentage of cars produced each decade by country. The graph gives the impression that production drastically decreased in the 1990s while this is not really true. What flaw in the construction of the graph leads to this impression?

Q: The following graphs shows the number of Nobel Prizes awarded in science for selected countries. Number of Nobel Prizes in Science Awarded for Selected Countries It appears as though the number of prize winners drastically declined in the 1970s (The number actually stayed the same.). What flaw in the construction of the graph leads to this impression? A) There are only 5 selected countries shown on the graph. Nobel prizes may have been awarded to other countries during this time. B) There was less scientific research being down in the 1970s due to budget cuts. C) The final catagory (1971 - 1974) covers a period of only 4 years while the other entries cover 10-year periods. D) Both A and C.

Q: The following graph shows the percent of families in the U.S. living below the poverty level by year. What is the rate of change in families living in poverty from B to I? (Round the answer to 3 decimal places.)

Q: The following graph shows the percent of families in the U.S. living below the poverty level by year. Which pair of points would be used to show the most rapid decrease in the number of families living in poverty? A) A to B B) D to E C) G to I D) F to G

Q: The following graph shows the percent of families in the U.S. living below the poverty level by year. Which pair of points would be used to show the most rapid increase in the number of families living in poverty? A) B to D B) C to D C) E to F D) H to I

Q: The following graph shows the percent of families in the U.S. living below the poverty level by year. Which slope is larger and why: From B to C, or from G to H? A) B to C. From B to C goes up by 0.4 while G to H only goes up by 0.2. B) B to C. There are 10 years between B and C while there is only 1 year between G and H. C) G to H. There are 10 years between B and C while there is only 1 year between G and H. D) G to H. The graph continues to rise from H to I.

Q: Which of these two graphs makes the best case for the rapid increase of the number of female soldiers in the U.S. marine corps?

Q: Which line has the steeper slope? (Answer "A", "B", or "Same".) A: B:

Q: Which line has the steeper slope? (Answer "A", "B", or "Same".) A: B:

Q: Which line appears to have the steeper slope? A: B:

Q: Use the intercepts to calculate the slope of this line. (Give the answer in fraction form.)

Q: Which graph has the same slope as the graph below. A) B) C)

Q: Given the data below concerning oil prices, which point would best pair with point D to make a case for a slow increase in the price of oil? Point Year Oil Price ($ per barrel) A 1994 16 B 2002 20 C 2005 60 D 2007 64 A) A B) B C) C

Q: Given the data below concerning oil prices, which point would best pair with point D to Point Year Oil Price ($ per barrel) A 1994 17 B 2002 19 C 2005 59 D 2007 63 A) A B) B C) C

Q: Matt's driveway was 667 square feet and cost $3,435.05 to have concrete poured. If Adam's driveway costs $1,112.40 and Dixie has a driveway that is 116 square feet larger, how much would Dixie expect to pay?

Q: A contractor charges by the square foot for pouring concrete sidewalks and driveways. If a 258 square foot driveway costs $1,328.70 and a 379 square foot driveway costs $1,951.85, what is the rate per square foot?

Q: A moving company charges a flat rate of $104.83 per day plus $0.62 per mile. Jamie received an estimate for a move of $197.21. The actual move was 14 miles shorter than expected. What was the actual cost of the move?

Q: A moving company charges a flat rate of $104.83 per day plus $0.62 per mile. If a move is 7 miles longer than expected, how much extra will it cost?

Q: A moving company charges a flat rate of $104.83 per day plus $0.62 per mile. Express the rate of change in dollars per mile.

Q: Find the slope of the line through the points and .

Q: Find the slope of the line through the points (0, ) and (, 0).

Q: Given a line segment with endpoints (7, -3) and (17, -11), is does the point (12, -7) lie on that line segment? (Answer "Yes" or "No".)