Question

Choose the system of equations that matches the following graph:

http://learn.flvs.net/webdav/assessment_images/educator_algebraII_v14/02_13_mod_2_test_bankg_24.gif

x-4y=-4
3x+4y=36

x+4y=-4
3x-4y=36

x+4y=-4
3x+4y=36

x-4y=-4
3x-4y=36

Answer 1

we can't see flvs files, you have to download it and attach it here or use a screenshot app

Answer 2

@bibby The lines intersect at (8,3). Does that help?

Answer 3

I need to hear that from mr. yee himself

Answer 4

Hehe

Answer 5

ok sorry i was gone mr.bibby

Answer 6

ok, well there are 2 ways I see of going about this
one involves finding the equations of the lines in y=mx+b form and the other involves plugging in the intersection point to each choice until we find our solution

which one should we do

Answer 7

idk lol. Lets go with the 2nd option.

Answer 8

plug in (8,3) into each choice and see which ones comes out true

x=8
y=3

Answer 9

how do i know which is true

Answer 10

nvrmnd lol

Answer 11

if the left hand side equals the right hand side it's true

you good?

Answer 12

i went full retard

Answer 13

you never go full retard

Answer 14

never go full retard

Answer 15

the first one

Answer 16

hello @bibby

Answer 17

I think so, let me check

Answer 18

hello friend I got distracted

Answer 19

sorry thought u were gone.

Answer 20

x-4y=-4
3x+4y=36

solve the first one for x, we get x=4y-4

3x+4y=36
3(4y-4)+4y=36
12y-12+4y=36
16y=48
y=3

Answer 21

x-12=-4
x=8

looks good

Answer 22

so now what?

Answer 23

@bibby

Answer 24

we're done?

Answer 25

oh ok thank you.