3

Set 2: Linear Functions (Intermediate)

Explanation

Answer: C

PROBLEM

What is the y-intercept of y = -3x + 9?

What is the y-intercept of y = -3x + 9?

A.

-3

B.

-9

C.

9

✓ Correct
D.

3

Detailed Explanation

Choice C is the best answer. In y = mx + b, b = 9

Why others are wrong:
A: -3 is incorrect because it does not satisfy the equation.
B: -9 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.