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What is the vertex of f(x) = |x + 2|?

Answer and explanation

Correct answer: (-2, 0)

The governing concept is translation of the standard modulus graph y = |x|, whose vertex is (0, 0). In y = |x + 2|, the expression x is replaced by x + 2, so the graph shifts 2 units to the left without any vertical shift. Consequently, the vertex becomes (-2, 0). The same result follows algebraically: the sharp turning point occurs when the expression inside the modulus is zero, so x + 2 = 0 and x = -2; then y = |0| = 0. Thus option A is correct. The point (2, 0) would result from |x - 2|, while the other choices confuse a horizontal displacement with a y-coordinate.

Related tags

ModulusGraph-TransformationsVerticesGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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