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If ( 2x-7>-1 ), which point and direction are correct on the number line?

Answer and explanation

Correct answer: Open dot at (3) with shading to the right

Solving the inequality gives 2x - 7 > -1, so 2x > 6 and x > 3. Therefore, the boundary point is 3. Since the inequality sign is >, 3 is not included in the solution set, so an open dot is used. All numbers greater than 3 lie to the right of 3, so the shading extends to the right. Exam tip: use an open dot for > or < and a closed dot for ≥ or ≤.

Related tags

Linear InequalitiesNumber LineOpen DotSolution SetGrade 11 MathematicsRepresentation On Number LineMathematicsClass 11 Mcq

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