- Algebra 1/Pre-AP Algebra 1 FWISD
Identifying the Vertex
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) = 6(x - 5)2 - 9
(5.-9)
f(x) = 5(x – 6)2 + 9
(9,-5)
f(x) = 9(x + 5)2 - 6

(6,9)
f(x) = 9(x - 5)2 + 6
(5,6)
f(x) = 6(x + 9)2 – 5
(-5.-6)

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.

Franklin is purchasing a home for $82,107 and is financing 80% of it. the documentary stamp tax on the deed in his state is $0.70 per $100 or portion thereof. how much will he pay for the documentary stamp tax?

Arepresentative from plan 1 wants to use the graph below to sell health plans for his company. how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans? the scale on the y-axis could be changed to 0–100. the scale on the y-axis could be changed to 25–40. the interval of the y-axis could be changed to count by 5s. the interval of the y-axis could be changed to count by 20s.