Bluebook SAT Test Linear Functions 13

Question 1

Line n is defined by 3x + 6y = 18. What is the slope of a line perpendicular to n?

Accepted Answer

2

Answer

−2

Answer

1/2

Answer

−1/2

Question 2

A function is linear if and only if it has a constant rate of change. Which of the following tables is linear?
A: x=1,2,3,4; y=2,6,12,20 | B: x=0,2,4,6; y=1,5,9,13 | C: x=1,3,5,7; y=3,9,27,81 | D: x=0,1,2,3; y=4,3,1,−2

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 3

If f(x) = 4x + b and f(2) = 11, what is f(−1)?

Accepted Answer

−1

Answer

1

Answer

−3

Answer

3

Question 4

The graph of a linear function has a slope of 0 and passes through (2, −5). Which is the equation?

Accepted Answer

y = −5

Answer

x = 2

Answer

y = 2

Answer

x = −5

Question 5

A savings account starts with $300 and earns $25 per week. How many weeks w until the account reaches $700?

Accepted Answer

16

Answer

20

Answer

12

Answer

28

Question 6

What is the difference in y-intercepts between the lines y = 3x + 7 and y = 3x − 4?

Accepted Answer

11

Answer

−11

Answer

3

Answer

0

Question 7

The function d(t) = 65t + 10 gives the distance (in miles) a car has traveled t hours after a road trip began, where 10 miles had already been covered. What does 65 represent?

Accepted Answer

The speed of the car in miles per hour

Answer

The distance already covered at the start

Answer

The total trip distance

Answer

The time to reach the destination

Question 8

Line j passes through (−3, 0) and has slope 2. Which point also lies on line j?

Accepted Answer

(0, 6)

Answer

(0, −6)

Answer

(1, 2)

Answer

(2, 1)