Name:    Algebra 1 SOL A.16

Multiple Choice
Identify the choice that best completes the statement or answers the question.

For the following questions, suppose this table shows the total number of points scored and yards gained by the football team of each given university on a Saturday in October.

 School Points Scored x Yards Gained y Virginia Tech 47 468 Univ. of Virginia 27 377 Wake Forest 24 392 Maryland 37 407 Duke 7 275

1.

Which is an equation for the line of best fit? Round your numbers to the nearest tenth. Use your graphing calculator.
 a. c. b. d.

2.

How many points would you expect a team to have scored if they gained 500 yards? Round you answer to the nearest whole number.
 a. 49 c. 151 b. 54 d. 2,505

3.

How many yards would you expect a team to have gained if they scored 14 points? Round your answer to the nearest whole number.
 a. 272 c. 318 b. 300 d. 336

4.

Which appears to be an equation for the best-fit line for the data shown in this graph?

 a. c. b. d.

For the following questions, use this table giving the number of stories and number of rooms in five hotels in Virginia. The equation of the best-fit line relating this data is y = 33.6x – 29.4.

 Stories x 19 15 7 3 2 Rooms y 685 395 153 95 72

5.

Using the equation for the best-fit line, how many rooms would you expect to find in a hotel of 10 stories? Round your answer to the nearest whole number.
 a. 102 c. 307 b. 196 d. 521

6.

How many stories would you expect a hotel to have if it has 130 rooms? Round your answer to the nearest whole number.
 a. 1 c. 9 b. 5 d. 12

For the following questions, use this table which gives the grade point average and number of hours spent doing homework per week for 6 high schools students.

 Hours per weekdoing homework x 18 16 15 12 7 8 GPA y 4.0 3.8 3.4 3.0 2.3 2.1

7.

What is an equation for the line of best fit for this data? Round your numbers to two decimal places. Use your graphing calculator.
 a. c. b. d.

8.

If a student spends 10 hours per week doing homework, what GPA would he or she be expected to have? Round your answer to two decimal places.
 a. 2.62 b. 2.86 c. 3.2 d. 17.92

9.

If a student has a GPA of 1.60, how many hours per week would you expect him or her to spend doing homework? Round your answer to the nearest whole number.
 a. 6 b. 4 c. 2 d. 1