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After solving the inequality (4x+1>9), which representation will be correct on the number line?

Answer and explanation

Correct answer: Open circle at 2 and shading to the right

Solving the inequality gives 4x+1>9, so 4x>8 and x>2. The boundary point 2 is not included because the inequality is strict; therefore, an open circle is placed at 2. All values greater than 2 lie to the right, so the right side is shaded. A closed circle would represent an inclusive inequality such as x≥2 or x≤2. Exam tip: use an open circle for > or < and a closed circle for ≥ or ≤.

Related tags

Linear InequalitiesNumber Line RepresentationStrict InequalityRepresentation On Number LineMathematicsClass 11 Mcq

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