SOLUTION: I wanted to know how to solve by graphing. -3x-y=-10 4x-4y=8 (-1,3)or (1,3) or (3,-1) or (3,1) I forgot how to solve and I have finals this week... Thanks for any help..

Question 362367: I wanted to know how to solve by graphing.
-3x-y=-10
4x-4y=8
(-1,3)or (1,3) or (3,-1) or (3,1)
I forgot how to solve and I have finals this week...
Thanks for any help...
Angelia
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
-3x-y=-10...................1
4x-4y=8.....................2
multiply equation 1 by-4
12x+4y=40
add it to 2
16x=48
x=3
plug value of x in 1
-9-y=-10
y=1
(3,1) is the solution
...
if you need to solve by graphing then generate 3 values of y for various values of x for both equations Example
1. (1, 7) (2 ,4)
2.(1-1)

...
m.ananth@hotmail.ca
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