SOLUTION: What is the answer to x=y-7 2x-5y=-2 AND I also need to know -3x+2y=10 -2x-y=-5

Question 171950: What is the answer to
x=y-7
2x-5y=-2
AND I also need to know
-3x+2y=10
-2x-y=-5

Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!
, EQN 1 ------->
, EQN 2 ----->
Subst. EQN 1 in EQN 2:

-------->

subst. in EQN 1:

The lines intersect thru these points(-11,-4) as shown:
---> RED Line, EQN 1; GREEN Line, EQN 2
.
, EQN 3 ------->
, EQN 4 -------->
We equate the 2 eqn's:

-->
Subst in EQN 4:
------>
Therefore, these lines intersect at points(0,5), as we see:

-----> RED Line, EQN 3; GREEN Line, EQN 4
Thank you,
Jojo

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