Question

y = -3x^2 + 12x + -5. I need to find the x-coordinate of the vertex of this parabola? But I have not been able to figure out how to factor this particular equation. What are the factors? and x Coordinates?

Answer 1

vertex V=(2,7)

Answer 2

Mark can I see how you found the x and y coordinates?

Answer 3

verex x=-b/2a
x=-12/2(-3)=12/6=2, put this x value to the equation to get the y of the vertex
y = -3x^2 + 12x + -5.
y = -3(2)^2 + 12(2) -5.
y=7 therfore
V(2,7) ans

Answer 4

thank you

Answer 5

yw good luck joseph