Question

find the vertex.

(y = 9 - 8x + 2x^2)

( ? , )

hint: the formula for the axis of symmetry

Explanation:

Identify coefficients

Using the Quadratic Functions knowledge point

$$
LATEXBLOCK0
$$

Find x-coordinate

Using the Axis of Symmetry and Parabola Vertex Identification knowledge points

$$ x = -\frac{b}{2a} = -\frac{-8}{2(2)} = \frac{8}{4} = 2 $$

Find y-coordinate

Using the Parabola Vertex Identification knowledge point

$$
LATEXBLOCK1
$$

Answer:

Find the vertex.
\(y = 9 - 8x + 2x^2\)

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