Set 1: Linear Functions (Intermediate)

Explanation

Answer: A

Find the x-intercept of $y = 2x - 8$ .

$4$

✓ Correct

$-8$

$-4$

$2$

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Set $y=0$ . 1. Substitute: $0= 2 x - 8$ 2. Add 8: $8= 2 x$ 3. Divide: $x = 4$ Strategic Tip: The x-intercept is the value of x when the line crosses the horizontal axis ( $y=0$ ). Choice B is incorrect because it is the y-intercept. Choice C is incorrect because of sign error. Choice D is incorrect because it is the slope.

Key Steps:

•

The correct answer is $4$

Why others are wrong:

B: Choice B is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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