Precalculus Examples

$f (x) = 3 {(x - 7)}^{2} - 4$

Step 1

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

$a = 3$

$h = 7$

$k = - 4$

Step 2

Find the vertex $(h, k)$ .

$(7, - 4)$

Step 3