The vertex form of a quadratic function is flax) = a (x - h) 2 + k. What is the vertex of each function? Match the function

rule with the coordinates of its vertex.

f (x) = 9 (x - 5) 2 + 6

(6.9)

f (x) = 5 (x - 6) 2 + 9

(5.-9)

f (x) = 6 (x + 9) 2 - 5

(5.6)

f (x) = 9 (x + 5) 2 - 6

(-9.-5)

f (x) = 6 (x - 5) 2 - 9

(-5, - 6)

Our functions are

1. 9 (x - 5) ^2 + 6

2. 5 (x - 6) ^2 + 9

3. 6 (x + 9) ^2 - 5

4. 9 (x + 5) ^2 - 6

5. 6 (x - 5) ^2 - 9

To get the vertex, referring to a (x - h) ^2 + k, we only need h and k. The vertex will be at (h, k), so using this, we can go back and find h and k.

1. (5, 6)

2. (6, 9)

3. (-9, - 5)

4. (-5, - 6)

5. (5, - 9)