2

Set 5: Linear Inequalities

Explanation

Answer: C

Which value is NOT a solution to 2(3x1)4x+102(3x - 1) \leq 4x + 10?

A.

x=5x = 5

B.

x=6x = 6

C.

x=7x = 7

✓ Correct
D.

x=0x = 0

Detailed Explanation

Choice C is correct. Choice C is the correct answer. Solve the inequality first. 1. Distribute: 6x24x+106x - 2 \leq 4 x + 10 2. Subtract 4 x: 2x2102x - 2 \leq 10 3. Add 2: 2x122x \leq 12 4. Divide by 2: x6x \leq 6 5. Check choices: We need a value that is NOT 6\leq 6. x=7x=7 is greater than 6, so it is NOT a solution. Strategic Tip: "Not a solution" means finding the value that makes the inequality FALSE. Choice A is incorrect because 565\leq 6 is true. Choice B is incorrect because 666\leq 6 is true. Choice D is incorrect because 060\leq 6 is true.

Key Steps:

The correct answer is x=7x = 7

Why others are wrong:
A: Choice A is incorrect and may result from a calculation error.
B: Choice B 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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