Set 3: Linear Inequalities (Intermediate)

Explanation

Answer: A

Which inequality represents the region strictly between $x = -1$ and $x = 4$ ?

$-1 < x < 4$

✓ Correct

$-1 \leq x \leq 4$

$x < -1$ or $x > 4$

$y < -1$ or $y > 4$

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Vertical band between two x-values. 1. Strictly between: Excludes boundaries $\rightarrow <, >$ 2. Inequality: $-1 < x < 4$ Strategic Tip: Vertical lines involve $x$ , horizontal lines involve $y$ . Choice B is incorrect because it includes boundaries. Choice C is incorrect because it represents the outside regions. Choice D is incorrect because it uses $y$ instead of $x$ .

Key Steps:

•

The correct answer is $-1 < x < 4$

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.

🎯 Keep Practicing!

Master all sections for your best SAT score

📚Reading & Writing→📖Vocabulary→