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If (x\in\mathbb{Z}) and (-2<x\le 2), which points will be filled on the number line?

Answer and explanation

Correct answer: (-1,0,1,2)

The direct answer is option B: \(-1,0,1,2\). The condition \(x\in\mathbb Z\) means x must be an integer, so we list only whole numbers, including negative whole numbers, zero, and positive whole numbers. The inequality is \(-2<x\le2\). Because the left sign is strict, -2 is excluded. Because the right sign includes equality, 2 is included. The integers strictly greater than -2 and up to 2 are therefore \(-1,0,1,2\). Option A incorrectly includes -2. Option B lists exactly all allowed integers. Option C incorrectly omits 2, even though \(x=2\) satisfies the inequality. Option D incorrectly omits -1 and 0, both of which satisfy it. On a number line for integers, mark separate points rather than shading every real number. Memory trick: strict left boundary removes -2; inclusive right boundary keeps 2.

Related tags

Integer SolutionsHalf Open IntervalNumber Line

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