Question

13. What is the vertex for the following equation?
f(x)=x^2-8x+5
A. (8,5)
B. (4,6)
C. (-8,5)
D. (4,-11)

Answer 1

it's -b/2a, here b = -8, a = 1

Answer 2

so vertex is 8 for x coordinate
sub 8 in equation to get y

Answer 3

should be A

Answer 4

So the answer is A ?

Answer 5

yes sir