Bluebook SAT Test Linear Functions 12

Question 1

The line 2y = 6x − 10 is graphed. What are the slope and y-intercept?

Accepted Answer

slope = 3, y-intercept = −5

Answer

slope = 6, y-intercept = −10

Answer

slope = 3, y-intercept = 5

Answer

slope = 6, y-intercept = 10

Question 2

A linear function has the values shown: f(−2) = 8 and f(4) = −4. What is f(1)?

Accepted Answer

2

Answer

4

Answer

0

Answer

−2

Question 3

A parking garage charges $4.00 for the first hour and $2.50 for each additional hour. Which function gives the total charge T for h hours (h ≥ 1)?

Accepted Answer

T(h) = 2.50(h − 1) + 4.00

Answer

T(h) = 2.50h + 1.50

Answer

T(h) = 4.00h

Answer

T(h) = 4.00 + 2.50h

Question 4

If the graph of y = kx − 6 passes through (3, 0), what is the value of k?

Accepted Answer

2

Answer

−2

Answer

3

Answer

−3

Question 5

Lines p and q are perpendicular. Line p has slope −5/2. What is the slope of line q?

Accepted Answer

2/5

Answer

−2/5

Answer

5/2

Answer

−5/2

Question 6

A linear function f has f(2) = 9 and f(5) = 18. What is f(0)?

Accepted Answer

3

Answer

−3

Answer

6

Answer

0

Question 7

The equation 5x − y = 12 can be rewritten as which of the following?

Accepted Answer

y = 5x − 12

Answer

y = −5x + 12

Answer

y = 5x + 12

Answer

y = −5x − 12

Question 8

A store earns $8 profit per item sold. After selling 25 items, the total profit is $50 (because it first paid a $150 setup cost). Which function P(n) models total profit after n items?

Accepted Answer

P(n) = 8n − 150

Answer

P(n) = 8n + 150

Answer

P(n) = 8n − 50

Answer

P(n) = 150 − 8n