Question

WILL MEDAL AND FAN!, please help me so i can pass this class
Find the x-intercepts of the parabola with vertex (-3,16) and y-intercept (0,-20).
Write your answer in this form: (x1,y1),(x2,y2).
If necessary, round to the nearest hundredth.

Answer 1

@AliceCullen help please?

Answer 2

x = -5 and x = -1

Answer 3

x-intercepts: -5 and -1

Answer 4

youre sure???

Answer 5

lol

Answer 6

Given equation:
y=A(x+3)^2+16
using given point (0,-20) to solve for A
-20=A(0+3)^2+16
9A=-36
A=-4
Equation of parabola:


y=-4(x-h)^2+k
Find x-intercepts
set y=0
0=-4(x+3)^2+16
4(x+3)^2=16
(x+3)^2=4
x+3±√4=±2
x=-5
or
x=-1
Ans:
x-intercepts: -5 and -1

Answer 7

it said incorrect, i think i just typed it in wrong though, could you help me with another please?

Answer 8

Find the x-intercepts of the parabola with vertex (-1,-108) and y-intercept (0,-105).
Write your answer in this form: (x1,y1),(x2,y2).
If necessary, round to the nearest hundredth.