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How will (2x − 7)/3 > 5 be shown on the number line?

Answer and explanation

Correct answer: x > 11; open point at 11 and shading to the right

To solve the inequality, first multiply both sides by 3. Since 3 is positive, the inequality sign remains unchanged: 2x − 7 > 15. Adding 7 gives 2x > 22, and dividing by the positive number 2 gives x > 11. The strict sign > means that x = 11 is not included, so 11 must be marked with an open circle. Values greater than 11 lie to the right of 11 on the number line, so that ray is shaded to the right. A closed point would represent ≥ or ≤ and is therefore incorrect. Shading left would represent x < 11 or x ≤ 11. Hence option A correctly combines the algebraic solution and its number-line representation.

Related tags

Linear InequalitiesNumber LineStrict InequalityRepresentation On Number LineMathematicsClass 11 Mcq

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