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What is the correct number-line representation of (x + 7)/4 ≥ -2?

Answer and explanation

Correct answer: x ≥ -15; closed at -15 and shaded right

The governing rule is that multiplying or dividing an inequality by a positive number preserves its direction. Starting with (x + 7)/4 ≥ -2, multiply both sides by 4, which is positive: x + 7 ≥ -8. Subtracting 7 from both sides gives x ≥ -15. The equality is included because the sign is ≥, so -15 must be represented by a closed dot. Numbers greater than -15 lie to the right, and that region is shaded. Thus option C is the complete and correct number-line representation. Option A reverses the direction and places the shading on the wrong side. Options B and D use open dots, incorrectly excluding the boundary value -15; D also shades the opposite side.

Related tags

Linear-InequalitiesFractional-InequalityNumber-LineRepresentation On Number LineLinear InequalitiesMathematicsClass 11 Mcq

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