Question

What is the vertex form of the equation?
y = –x^2 +12x – 4

Answer 1

well have you tried graphing it on a graphing calculator?

Answer 2

I don't have one

Answer 3

ok well there is a mathematical way to solve this
x-value=(-b)/(2a)
b is the second number next to a variable
a is the first number next to a variable
plug In what you get into the equation and you get the y-value
-(12)/(2*(-1))
-12/-2
6
plug that in and see what you get
-(6)^2+12(6)-4

Answer 4

-(6)^2+12(6)-4 = 32?

Answer 5

yep

Answer 6

How does that fit into "vertex form of the equation"?

Answer 7

well now you plug it into this equation
y=a(x-h)^2+k
h is the x-value
k is the y-value

Answer 8

I got it thanks!