Bluebook SAT Test Linear Functions 5

Question 1

A truck travels at a constant speed. After 2 hours it has traveled 110 miles, and after 5 hours it has traveled 275 miles. How many miles per hour is the truck traveling?

Accepted Answer

55 mph

Answer

50 mph

Answer

60 mph

Answer

65 mph

Question 2

Which line is perpendicular to y = (2/3)x + 1?

Accepted Answer

y = −(3/2)x + 5

Answer

y = (2/3)x − 4

Answer

y = (3/2)x + 1

Answer

y = −(2/3)x + 1

Question 3

A linear function f satisfies f(0) = −6 and f(4) = 10. What is f(6)?

Accepted Answer

18

Answer

16

Answer

20

Answer

24

Question 4

In the function P(t) = 1200 − 40t, P represents the number of gallons of water in a pool and t represents time in hours. What does −40 represent?

Accepted Answer

The rate at which water drains (40 gallons per hour)

Answer

The initial amount of water in the pool

Answer

The time it takes to empty the pool

Answer

The total gallons drained

Question 5

If the equation of a line is written as 6x − 2y = 8, what is the slope of the line?

Accepted Answer

3

Answer

−3

Answer

4

Answer

−4

Question 6

The function C(x) = 0.08x + 15 represents the monthly cost (in dollars) of a streaming service, where x is the number of premium channels added. If a customer pays $23.40, how many premium channels did they add?

Accepted Answer

105

Answer

99

Answer

101

Answer

115

Question 7

A line ℓ has slope −3 and passes through (2, 7). Which point also lies on line ℓ?

Accepted Answer

(0, 13)

Answer

(3, 4)

Answer

(4, 1)

Answer

(1, 10)