Algebra Examples

$f (x) = \frac{1}{4} {(x + 2)}^{2} - 9$

Step 1

Use the vertex form, $y = a {(x - h)}^{2} + k$ , to determine the values of $a$ , $h$ , and $k$ .

$a = \frac{1}{4}$

$h = - 2$

$k = - 9$

Step 2

Find the vertex $(h, k)$ .

$(- 2, - 9)$

Step 3