Bluebook SAT Test Linear Functions 2

Question 1

A gym membership costs $50 to join and $20 per month. After how many months will the total cost equal $210?

Accepted Answer

7

Answer

6

Answer

8

Answer

9

Question 2

What is the slope of the line passing through (−3, 4) and (5, −4)?

Accepted Answer

−1

Answer

1

Answer

−2

Answer

2

Question 3

The graph of a linear function passes through (0, −3) and has slope 4. Which equation represents this function?

Accepted Answer

y = 4x − 3

Answer

y = 4x + 3

Answer

y = −3x + 4

Answer

y = 3x − 4

Question 4

A plumber charges $80 for the first hour and $55 for each additional hour. Which function gives the total charge T(h) for h hours (h ≥ 1)?

Accepted Answer

T(h) = 55(h − 1) + 80

Answer

T(h) = 55h + 80

Answer

T(h) = 55h + 25

Answer

T(h) = 80h + 55

Question 5

If the slope of a line is 0, which of the following best describes the line?

Accepted Answer

The line is horizontal

Answer

The line rises steeply from left to right

Answer

The line falls from left to right

Answer

The line is vertical

Question 6

The equation y = −(1/2)x + 6 models the amount of water (in gallons) remaining in a tank x minutes after draining begins. At what time will the tank be empty?

Accepted Answer

12 minutes

Answer

6 minutes

Answer

8 minutes

Answer

10 minutes

Question 7

Which of the following tables represents a linear function?

Table A: x: 1,2,3,4  y: 2,4,8,16
Table B: x: 1,2,3,4  y: 3,6,9,12
Table C: x: 1,2,3,4  y: 1,3,6,10
Table D: x: 1,2,3,4  y: 5,4,2,−1

Accepted Answer

Table B

Answer

Table A

Answer

Table C

Answer

Table D