Question

Which equation matches the graph shown?

(will attach graph and answer choices in a sec!)

Answer 1

GRAPH

Answer 2

Answer choices A,B,C,D top to bottom

Answer 3

roots

Answer 4

then y-int

Answer 5

i think B and D are out because that would mean the graph would be going upwards and the graph is going downwards... am i right??? the answer choices are between A and C??

Answer 6

y int=2
roots= (-2,0) and (1,0)
??? idk is that right??

Answer 7

yes thats true

Answer 8

yes then use in root form

Answer 9

nice elimenation teqnique

Answer 10

so how do i solve?? whats the root form again?? ;O
is it
y=a(x-h)^2+k
???is that it?

Answer 11

oh and thanks! :D

Answer 12

\[y=a(x-x _{1})(x-x _{2})\]

Answer 13

ohhh okay so what do i plug in again?

Answer 14

i always forget this one :/

Answer 15

first plug roots in (planting)

Answer 16

okay which ones do i plug? can u pls show me?? I'm a bit confused :/

Answer 17

both roots

Answer 18

x intercepts

Answer 19

i do them separately? like i do it twice? once for each root?

Answer 20

no same time

Answer 21

\[y=a(x+2)(x-1)\]

Answer 22

did u just plug them in?

Answer 23

and what do i do now then?

Answer 24

plug y-int

Answer 25

into the y value part?

Answer 26

@Jonask what do i do now>????

Answer 27

\[2=a(0-1)(0+2)\]

Answer 28

so 2=a(-1)(2)
2=a(-2)
-1=a
??
is that right?

Answer 29

@jonask is that right?? if so, what do i do next??

Answer 30

yes,you are done
\[y=-1(x-1)(x+2)\]

Answer 31

A

Answer 32

awesome!! thank you soooo much!! :D