Precalculus Examples

$x = {(y - 2)}^{2} - 8$

Step 1

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

$a = 1$

$h = - 8$

$k = 2$

Step 2

Find the vertex $(h, k)$ .

$(- 8, 2)$

Step 3