MATH SOLVE

3 months ago

Q:
# Determine the vertex off(x) = x^2 + 8x - 5

Accepted Solution

A:

Answer: (-4,-21)Step-by-step explanation: Apply the formula for calculate the x-coordinate of the vertex of the parabola: [tex]x=\frac{-b}{2a}[/tex] Where: a=1 and b=8 Then, this is: [tex]x=\frac{-8}{2*1}=-4[/tex] Now you must substitute x=-4 into the function to obtain the y-coordinate of the vertex. Then, this is: [tex]f(x)=y=(-4)^{2}+8(-4)-5=-21[/tex] Therefore the vertex is: (-4,-21)