Set 2: Linear Functions (Intermediate)

**Choice D is the best answer.** Set y = 0: 3x - 9 = 0, x = 3

Explanation

Answer: D

PROBLEM

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

-3

-9

✓ Correct

Detailed Explanation

Choice D is the best answer. Set y = 0: 3x - 9 = 0, x = 3

Why others are wrong:

A: 9 is incorrect because it does not satisfy the equation.

B: -3 is incorrect because it does not satisfy the equation.

C: -9 is incorrect because it does not satisfy the equation.