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Set 3: Linear Inequalities (Intermediate)

Explanation

Answer: A

Solve: 2x3y>62x - 3y > 6 for yy.

A.

y<23x2y < \frac{2}{3}x - 2

✓ Correct
B.

y>23x2y > \frac{2}{3}x - 2

C.

y<23x+2y < \frac{2}{3}x + 2

D.

y>23x+2y > \frac{2}{3}x + 2

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Isolate yy and watch the sign. 1. Subtract 2 x: 3y>2x+6-3 y > -2 x + 6 2. Divide by -3: y<23x+63y < \frac{-2}{-3}x + \frac{6}{-3} (Reverse sign!) 3. Simplify: y<23x2y < \frac{2}{3}x - 2 Strategic Tip: Dividing by negative coefficient of yy flips the inequality. Choice B is incorrect because it fails to reverse the sign. Choice C is incorrect because it has the wrong y-intercept sign. Choice D is incorrect because it fails to reverse sign and has wrong intercept.

Key Steps:

The correct answer is y<23x2y < \frac{2}{3}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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