Homework Help: Math

Posted by Tammy on Wednesday, February 16, 2011 at 10:36am.

solve using the substitution method. If the system has no solution or infinite number of solution state this
4x+4y=-36
4x+4y=12

Math - Anonymous, Wednesday, February 16, 2011 at 10:41am
4x + 4y = -36
-4x -4x

4y = -4x-36
/4 /4 /4

y = -x-9
Now you substitute this equation into the second one.

4x + 4(-x-9)= 12
Distribute the 4
4x-4x = -36
0x = -36
0 is not equal to -36, so that means this has no solution.

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