The vertex form of a quadratic function is f(x) = 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

(5.-9)

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

(-9,-5)

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

(-5, -6)

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

(5,6)

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

(6,9)

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?