Set 15: Linear Functions (Intermediate)

Explanation

Answer: A

Convert $y = -\frac{2}{5}x + 2$ to standard form.

$2x + 5y = 10$

✓ Correct

$2x + 5y = 2$

$5x + 2y = 10$

$2x - 5y = 10$

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Clear fraction. 1. Multiply by 5: $5y = -2 x + 10$ . 2. Add 2 x: $2x + 5 y = 10$ . Strategic Tip: Multiply by the denominator first. Choice B is incorrect because didn't multiply the constant. Choice C is incorrect because swapped coefficients. Choice D is incorrect because sign error.

Key Steps:

•

The correct answer is $2x + 5y = 10$

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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