Find a solution to the following system of equations. -3x+3y=-9 -3x+y=7
PLZ help anyone

Step-by-step explanation:

Ok. In order to answer this question, there are multiple ways in which we can approach this. The way I am going to do is substitution. Isolate the y in the second equation which gives you y=7+3x.

Now what you want to do is to plug in that equation into the first one.

-3x+3(7+3x)=-9.

-3x+21+9x=-9

6x=-30

x=-5,

Ok, now you need to solve the y variable.

So plug in the x variable into the second equation and solve for y.

y=-8

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step-by-step explanation:

just for that im not answering

- (2, -7)

- lines r and s and lines t and u must be parallel