4
Answer: ASet 3: Linear Inequalities (Intermediate)
Explanation
Solve: for .
A.
✓ Correct
B.
C.
D.
Detailed Explanation
Choice A is correct. Choice A is the correct answer. Isolate and watch the sign. 1. Subtract 2 x: 2. Divide by -3: (Reverse sign!) 3. Simplify: Strategic Tip: Dividing by negative coefficient of 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
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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