SOLUTION: y=3x + 7 y= x-9

Question 420328: y=3x + 7
y= x-9
Answer by algebrahouse.com(1659) (Show Source): You can put this solution on YOUR website!
y = 3x + 7
y = x - 9

3x + 7 = x - 9 {substituted 3x + 7, in for y, into bottom equation}
3x = x - 16 {subtracted 7 from both sides}
2x = -16 {subtracted x from both sides}
x = -8 {divided both sides by 2}

y = x - 9 {bottom equation}
y = -8 - 9 {substituted -8, in for x, into bottom equation}
y = -17 {combined like terms}

x = -8 and y = -17
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