SOLUTION: y=x-3 and y=3x+5 substitution

Question 609551: y=x-3 and y=3x+5 substitution

Answer by mathie123(224) (Show Source): You can put this solution on YOUR website!
In this question: we can substitute y from the first equation into the second equation (a special type of substitution called the y=y method).
This gives us:

Now we need to isolate x and solve:

Now we have our x value, we need to substitute this into either of the original equations and solve for y (I will put it inot the y=x-3 equation though either choice will give you the same answer)

So the point of intersection is (-1,-2)
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