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Set 11: Linear Inequalities (Intermediate)

Explanation

Answer: A

Which inequality represents the region ON or ABOVE the line y=x+2y = x + 2?

A.

yx+2y \geq x + 2

✓ Correct
B.

y>x+2y > x + 2

C.

yx+2y \leq x + 2

D.

y<x+2y < x + 2

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Match the keywords. 1. "On": Inclusive (\leq or \geq). 2. "Above": Greater than (>> or \geq). 3. Combine: \geq Strategic Tip: "On" means the line is solid and included in the solution. Choice B is incorrect because it excludes the line (strict inequality). Choice C is incorrect because it shades below. Choice D is incorrect because it shades below and excludes the line.

Key Steps:

The correct answer is yx+2y \geq x + 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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