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The shaded number-line region is [0,∞). Which inequality is equivalent to it?

Answer and explanation

Correct answer: x≥0

The governing concept is interval notation and endpoint inclusion. The interval [0,∞) contains every real number from 0 onward. The square bracket at 0 means that 0 itself is included, while the direction toward infinity means all numbers greater than 0 are also included. Therefore the equivalent inequality is x≥0, so option C is correct. Option A, x>0, would exclude 0 and would be represented by a parenthesis at 0. Options B and D describe numbers on the nonpositive or negative side of the number line, which is the opposite direction. Infinity is not an actual endpoint, so no bracket is placed there.

Related tags

Linear-InequalitiesInterval-NotationNumber-LineRepresentation On Number LineLinear InequalitiesMathematicsClass 11 Mcq

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