Y
Finish the steps below to write a quadratic function for
the parabola shown.
8
6
1. Use the vertex form, f(x) = a(x - 1)2 + k, and
substitute in the values for h and k.
f(x) = a(x - 5)2 +3
2. Use another point and substitute in values
for x and f(x). Solve for a.
5 = a(6-5)2 + 3
(6 5
4
2
Vertex:
(5, 3)
3. Write the function, using the values for h, k, and a.
х
The function is f(x)
(x
32+
2
4
6
8