Question

help plz???

Answer 1

@Aeon @Elsa213 @moreso @theDeviliscoming @ThisGirlPretty @Ultrilliam @Vocaloid

Answer 2

I'm sorry but you tagged the ai lol

Answer 3

what

Answer 4

Aeon isn't a user she is the ai lol

Answer 5

i just type the @ symbol and the go through the letters of the alphabet

Answer 6

you are given the vertex (h,k) = (-1,-16)
you are also given the y-intercept (0,-15)

so I believe you can substitute these into the equation (y-k) = a(x-h)^2 and solve for a

Answer 7

(-15+16) = a(0+1)^2 solve for a

Answer 8

Then just solve, right?

Answer 9

right, but there's more work to do after you solve for a

Answer 10

-1 = a (-1)

Is this right?

Answer 11

I'm not sure how you're getting negative signs

Answer 12

-15 + 16 = 1

(0+1)^2 = 1

so a = 1

Answer 13

then you go back to the original equation

(y-k) = a(x-h)^2

let y = 0 and solve for x

Answer 14

What do I do after that or is that it?

Answer 15

when you solve for x, you should get 2 x values as your x intercepts

Answer 16

so yes you will be done after that

Answer 17

I thought that x was 0

Answer 18

since you are solving for the x-intercepts, y is 0, not x

Answer 19

But in the equation x was put as 0

Answer 20

yes, we set x as 0 because we were given the y-intercept, and we wanted to solve for a

now we are setting y as 0 because we want to solve for x

Answer 21

remember that variables like x can take many values

Answer 22

Ok, so would my equation be

(-15+16) = 1(x-1)^2

Answer 23

not quite

remember that y = 0

Answer 24

also it should be (x+1)^2 not (x-1)^2 because h = -1

Answer 25

-15 would 0 but the rest is right. Right?

Answer 26

see above note

Answer 27

(0+16) = 1(x+1)^2

solve for x

Answer 28

Ok, that's what I had written down. I just didn't type in the right thing

Answer 29

Now what do I do?

Answer 30

take the square root of both sides

Answer 31

+/- 4 = x + 1

that gives you two cases:

1. 4 = x + 1
2. -4 = x + 1

solve both equations for x

Answer 32

(the +/- means +4 or -4)

Answer 33

x = 3 and -5 right

Answer 34

good, so those are your intercepts

it wants the answers in point form so it would be

(3,0) and (-5,0)

Answer 35

So, this is my answer?

Answer 36

yes

Answer 37

Thank you

Answer 38

It says it's wrong

Answer 39

oh dear

I checked my graph on desmos and it matches the problem perfectly :/

Answer 40

Hmm. Oh well, plato always says things like that, most of the time it's a glitch in the system. But thank you so much

Answer 41

did you put a comma between the intercepts?

Answer 42

oh wow I didn't see it was a test, sorry :(