Question

Please help fasttt!!

Answer 1

then u help me

Explanation:

Answer 2

a. x= -4 x=2

b. (-1,-9)

c. [-9,∞)

d. x=-1

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
`(-b)/(2a)`, a=1 and b=2 so

`(-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