Set 15: Linear Functions (Advanced)

Explanation

Answer: A

Identify the x-intercept and y-intercept of $2x + 4y = 8$ .

x-int: 4, y-int: 2

✓ Correct

x-int: 2, y-int: 4

x-int: 8, y-int: 8

x-int: 4, y-int: -2

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Cover-up method. 1. x-int ( $y=0$ ): $2x = 8 \rightarrow x = 4$ . 2. y-int ( $x=0$ ): $4y = 8 \rightarrow y = 2$ . Strategic Tip: Divide the constant term by the coefficients. Choice B is incorrect because swapped. Choice C is incorrect because ignored coefficients. Choice D is incorrect because sign error.

Key Steps:

•

The correct answer is x-int: 4, y-int: 2

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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