PRECALCULUS PRACTICE QUIZ

1. Let f (x) = 3x^2 +12x +3.
(a) Rewrite this quadratic function

(b) Find the vertex .

(d) Find the maximum or minimum value of the function .

(e) Sketch its graph labeling the vertex and intercepts.

1. Let f (x) = -x^2 +2x +15.

(a) Rewrite this quadratic function in standard form by completing the square .

(b) Find the vertex .

(d) Find the maximum or minimum value of the function .

(e) Sketch its graph labeling the vertex and intercepts .

1. Let f (x) = -2x^2 -4x +18.

(a) Rewrite this quadratic function in standard form by completing the square .

(b) Find the vertex .

(d) Find the maximum or minimum value of the function .

(e) Sketch its graph labeling the vertex and intercepts .

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