Question

Please help fasttt!!

Answer 1

Answer:

then u help me

Step-by-step explanation:

Answer 2

Answer:

a. x= -4 x=2

b. (-1,-9)

c. [-9,∞)

d. x=-1

Step-by-step explanation:

To find the roots or x intercepts, you set the parabola equal to 0 and solve.

0=$x^{2}$+2x-8 which will equal (x+4)(x-2) so x= -4, 2

To find the vertex you will do $\frac{-b}{2a}$, a=1 and b=2 so

$\frac{-2}{2(1)}$ which equals x= -1, to find the y value, you will plug x into the equation

y=$(-1)^{2}$+2(-1)-8 which means y=-9 so the vertex is (-1,-9)

The range is bottom to top so it is [-9,∞)

the AOS is equal to the x value of the vertex so x= -1