Question

DEAR GOD SOMEONE HALP MEH '-' PLZ HALP MEH....

Answer 1

Find the x-intercepts of the parabola with vertex (-3,16) and y-intercept (0,-20). Write your answer in this form: (x,y),(x,y). If necessary, round to the nearest hundredth.

Answer 2

*Help

Answer 3

nope srry im in 6th

Answer 4

ANYBODY... please...

Answer 5

im not god but i might be able to help

Answer 6

please

Answer 7

with wht??

Answer 8

ok one sec

Answer 9

find the x intercepts of the parabola with vertex (-5,80) and y intercept (0,-45). write answer in this form: (x,y),(x,y)

Answer 10

about it im really sry

Answer 11

anyone able to help?

Answer 12

hi i am rap god but i can help you

Answer 13

good enough

Answer 14

ill take any help i can get

Answer 15

okay let me think

Answer 16

ok ;)

Answer 17

tbh i am in no mood to do all this

Answer 18

so no help? :(

Answer 19

i will medal and fan :(

Answer 20

): i need to be in mood then only i can help
can u do something to bring that mood

Answer 21

?

Answer 22

sure

Answer 23

anyone please help me

Answer 24

find the x intercepts of the parabola with vertex (-5,80) and y intercept (0,-45). write answer in this form: (x,y),(x,y)

Answer 25

Hi Welcome to Openstudy!

First let's make an equation for the parabola.
Vertex form of a parabola is \(\sf y = a(x-h)^2+k\), where (h,k) is the vertex.

From the given values on your question: you have vertex (-3,16) and y-intercept (0,-20)
Plug the vertex in the equation, you'll get: \(\sf y=a(x+3)^2+16\)

Using the y-int point, find the value of "a" :

\(\sf -20=a(0+3)^2+16\)

Can you do that for now? Evaluate the equation and find the value of "a"

Answer 26

so i distribute the a?

Answer 27

No need to do that. Remove the brackets first. what is \(\sf (0+3)^2\)?

Answer 28

9

Answer 29

right, so you have: \(\sf -20=9a+16\)
can you solve "a" now?

Answer 30

do i add 20 to both sides then? or like subtract 16

Answer 31

subtracting both sides by 16 is easier (:

Answer 32

-36

Answer 33

right. now you have: -36 = 9a
now, divide both sides by 9, what will you get?

Answer 34

a= ?

Answer 35

a=-4?

Answer 36

a=4

Answer 37

but i need it like this (x,y),(x,y)

Answer 38

yes, a= -4 . We are not done yet. We are only setting up the equation to solve for the values of x-intercepts.

So the equation for the parabola is \(\sf y=-4(x+3)^2+16\)
TO get the x-interepts, we need to set y=0, so the points you will have should be (x,0) form. Now let's plug in y=0 in the equation and solve for the value of "x"

\(\sf 0=-4(x+3)^2+16\)

What is the first thing you would do to solve for x?

Answer 39

@shallowgam3r are you still there?

Answer 40

I guess he already left for no reason. For future reference, when you will solve for the value of x, you should end up getting two values for it. Goodluck!