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What is the vertex of f(x) = -|x - 3|?

Answer and explanation

Correct answer: (3, 0)

The basic graph y = |x| has vertex (0, 0). Replacing x by x - 3 translates that graph 3 units to the right, so the vertex moves to (3, 0). The negative sign outside the absolute value reflects the graph across the x-axis, changing the V-shape into an inverted V, but it does not move the point where the absolute-value expression is zero. Algebraically, |x - 3| = 0 when x = 3, and then f(3) = -0 = 0. Therefore the vertex is (3, 0), making option A correct. The other choices confuse the horizontal shift with a sign change or interchange the coordinates.

Related tags

Standard-FunctionsModulus-FunctionVertexGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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