SOLUTION: y = –3x 4x + y = 2

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Question 122998: y = –3x
4x + y = 2


Answer by johnnico6426(16) About Me  (Show Source):
You can put this solution on YOUR website!
First of all, I assume since the question involves two linear equation that you are looking for the values of x and y.
Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++3%5Cx+%2B+1%5Cy+=+0%2C%0D%0A++++4%5Cx+%2B+1%5Cy+=+2+%29%0D%0A++We'll use substitution. After moving 1*y to the right, we get:
3%2Ax+=+0+-+1%2Ay, or x+=+0%2F3+-+1%2Ay%2F3. Substitute that
into another equation:
4%2A%280%2F3+-+1%2Ay%2F3%29+%2B+1%5Cy+=+2 and simplify: So, we know that y=-6. Since x+=+0%2F3+-+1%2Ay%2F3, x=2.

Answer: system%28+x=2%2C+y=-6+%29.


In other words, in you plug in -3x for y in the equation 4x + y = 2. The answer would come up as x=2. You then have to plug in 2 for x, which will yield y = 6.
The solution is (2,-6)