Question

Select the system of equations that corresponds to the given graph.
(Graph in comments)


-2x - y = 4
2x + y = -2

-8x + 4y = -16
-4x + 2y = -8

x - 2y = 6
-2x + y = 4

2x + 3y = 6
3x + 2y = 4

Answer 1

both lines have a y intercept of 2... that may be a help... let x = 0 and solve for y

Answer 2

what equation do i use?

Answer 3

ok... look at the 1st pair

-2x - y = 4 x = 0 so - y = 4 means y = -4
2x + y = -2 x = 0 so y = -2

the 1st pair aren't your lines...

repeat to process for the other 2 pairs

Answer 4

i got y=-4 for both of the second equations (:

Answer 5

does that mean thats the one?

Answer 6

on so its not that pair

so try the last pair

Answer 7

for the 2nd pair you get

4y = -16 so y = -4

and 2y = -8 so y = -4

you are looking for y = 2 in both lines which is the y intercept... of where the lines cut the y-axis

Answer 8

oh okay so leemme try the third one

Answer 9

its not the third one so its gotta be D

Answer 10

correct... sorry about the time it took to get the answer... but I think it helps your understanding if you work through the solutions