Question

Determine the vertex of the function f(x) = 2(x - 5)2 + 8.
A.(8-5)
B.(8,5)
C.(-5, 8)
D.(5.8)

Answer 1

Solve for x, which can be done by moving x to the other side.
2(x-5)^2+8

So, x = 5

The y value is the number at the end and we can see that it is positive 8.

y = 8

Write it out as a coordinate pair and you would get (5,8) or answer choice D