Question

Which equation is graphed here?
http://static.k12.com/calms_media/media/1312500_1313000/1312639/1/5634cf4cc78c5f954e9151076931e1346ad3a658/HS_A1G2_S1_07_08_ART1.jpg

Answer 1

ooh the answers r here http://prntscr.com/5kax02

Answer 2

@wio

Answer 3

@triciaal

Answer 4

which one do you think it is

Answer 5

Try simplifying the answers into y=mx+b form. Then you can see the x-intercepts for each and see if they match. Another way to check is to calculate the slope between two points on the graph, and see which equation it matches. If you need help with either of these strategies I can help!

Answer 6

yea i need help lol

Answer 7

@sophflake

Answer 8

pick out two points on the graph first. then i'll tell you how to check the slope.

Answer 9

(4,-2) (-2,2)

Answer 10

To calculate the slope, do (y2-y1)/(x2-x1). So, (2-[-2])/(-2-4). What do you get?

Answer 11

2

Answer 12

@sophflake

Answer 13

Actually, you should get 4/-6, which simplifies to -2/3. which answers can you eliminate now?

Answer 14

b and c

Answer 15

so what tells me whether a or b is correct? @sophflake

Answer 16

take one of the points you found and plug the x into the equation. if you end up with the correct y value, it's the right equation.

Answer 17

can u walk me thru the substitution?

Answer 18

@SolomonZelman can u help me with the rest of this problem

Answer 19

?*

Answer 20

@Godlovesme

Answer 21

What's ur question? :)

Answer 22

i have to take one of the points found and plug the x into the equation.

Answer 23

but i need help with it

Answer 24

So u have slope and points u just need to pick which eqn is?

Answer 25

yes

Answer 26

K do u see the points (-2,4) and (2,-2)

Answer 27

yes

Answer 28

do u think u could tell me n ill do the work later? i have to leave to louisiana in a bit :l

Answer 29

Sure I'll pm u bye :)

Answer 30

Pm? @Godlovesme

Answer 31

private message

Answer 32

ooh, lol when?

Answer 33

hang on

Answer 34

k first i dont think the slope is correct ...
\[y2-y1 / x2-x1\]
piclk any points and try to calculate slope

Answer 35

pick**