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How will the solution of 3x − 2 ≥ 7 appear on a number line?

Answer and explanation

Correct answer: x ≥ 3; a closed circle at 3 and shading to the right

Solve the inequality step by step: 3x − 2 ≥ 7. Adding 2 to both sides gives 3x ≥ 9. Dividing by the positive number 3 preserves the inequality sign, so x ≥ 3. Because equality is included, the value 3 belongs to the solution set and is represented by a closed circle. Values greater than 3 also satisfy the inequality, so the ray is shaded to the right. Therefore option A is correct. An open circle would incorrectly exclude 3, and shading left would represent values less than 3. The inequality sign would reverse only if we multiplied or divided by a negative number, which does not occur here.

Related tags

Linear InequalitiesAlgebraic SolutionNumber LineInequality SymbolsRepresentation On Number LineMathematicsClass 11 Mcq

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