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Which integer is the smallest member of the interval (-9, -3]?

Answer and explanation

Correct answer: -8

The notation (-9, -3] describes all real numbers greater than -9 and less than or equal to -3. The round bracket at -9 means that -9 itself is excluded, while the square bracket at -3 means that -3 is included. Among the integers greater than -9, the first one encountered is -8, and it also satisfies -8 ≤ -3. Therefore, -8 is the smallest integer in the interval, so option B is correct. Option A is rejected because the left endpoint is open. Option C is in the interval but is not the smallest member. Option D is smaller than -9 and lies outside the interval.

Related tags

Linear-InequalitiesInteger-MembershipInterval-NotationRepresentation On Number LineLinear InequalitiesMathematicsClass 11 Mcq

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