Bluebook SAT Test Linear Functions 1

Question 1

A line passes through the points (2, 5) and (6, 13). What is the slope of the line?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 2

The function f(x) = 3x − 7 gives the profit (in dollars) a vendor earns when selling x items. What does the value 3 represent in this context?

Accepted Answer

The profit per item sold

Answer

The fixed cost per day

Answer

The total number of items

Answer

The break-even point

Question 3

Which equation represents a line with a slope of −2 and a y-intercept of 5?

Accepted Answer

y = −2x + 5

Answer

y = 5x − 2

Answer

y = 2x + 5

Answer

y = −2x − 5

Question 4

A car rental company charges a flat fee of $30 plus $0.25 per mile driven. Which function models the total cost C(m) for m miles?

Accepted Answer

C(m) = 0.25m + 30

Answer

C(m) = 0.30m + 25

Answer

C(m) = 30m + 0.25

Answer

C(m) = 25m + 0.30

Question 5

If f(x) = −4x + 11, what is the value of f(3)?

Accepted Answer

−1

Answer

1

Answer

23

Question 6

The table below shows values for a linear function g(x).

x:  0   1   2   3
g:  7  10  13  16

What is the value of g(10)?

Accepted Answer

37

Answer

34

Answer

40

Answer

43

Question 7

Line ℓ has the equation 4x − 2y = 10. What is the x-intercept of line ℓ?

Accepted Answer

(5/2, 0)

Answer

(0, −5)

Answer

(2, 0)

Answer

(−5, 0)