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Which number line representation shows (x≤1)?

Answer and explanation

Correct answer: Closed circle at (1) and shading to the left

The governing rules for a number-line graph are: a closed circle includes the boundary value, an open circle excludes it, and the shaded direction shows the values being selected. In x≤1, the symbol ≤ includes 1, so a closed circle must be placed at 1. The solution also contains every number smaller than 1, so the line is shaded to the left. Therefore option A is correct. Option B points left but wrongly excludes 1. Option C includes 1 but shades toward numbers greater than 1, representing x≥1. Option D both excludes 1 and points in the wrong direction. Together, inclusion and direction uniquely determine A.

Related tags

Number LineLinear InequalitiesGraphical RepresentationRepresentation On Number LineMathematicsClass 11 Mcq

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