Quadratic Functions: Standard Form Answers

The graph of which function will have a maximum and a y-intercept of 4?

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What is the vertex of the parabola in the graph? (, )

The graph of the function f(x) = x2 + 8x + 12 is shown. Which statements describe the graph? Check all that apply.

The axis of symmetry for the function f(x) = –2x2 + 4x + 1 is the line x = 1. Where is the vertex of the function located?

Which functions have an axis of symmetry of x = –2? Check all that apply.f(x) = x2 + 4x + 3f(x) = x2 – 4x – 5f(x) = x2 + 6x + 2 f(x) = –2x2 – 8x + 1f(x) = –2x2 + 8x – 2

What is the vertex of the function f(x) = x2 + 3x + ? (, )

Consider the function f(x) = x2 + 2x – 15. What are the x-intercepts of the function? Left-most x-intercept: (, 0) Right-most x-intercept: (, 0)

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Which must be true of a quadratic function whose vertex is the same as its y-intercept?

Which error did Mathieu make?

Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1. The vertex is the . The function is increasing . The function is decreasing . The domain of the function is . The range of the function is .

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