SOLUTION: Solve 3x+y=-3 and y=x+5 by using substitution. Express your answer as an ordered pair. A)( -2,3) B) (-8/3,-3) C) (3,-2) D) (-4/3,1)

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve 3x+y=-3 and y=x+5 by using substitution. Express your answer as an ordered pair. A)( -2,3) B) (-8/3,-3) C) (3,-2) D) (-4/3,1)       Log On


   

Question 416415: Solve 3x+y=-3 and y=x+5 by using substitution. Express your answer as an ordered pair.
A)( -2,3)
B) (-8/3,-3)
C) (3,-2)
D) (-4/3,1)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Solve
3x%2By=-3 ........1
y=x%2B5+..........2
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3x%2By=-3 ........1 ...solve for y
y=-3x-3 .......substitute in 2 and solve for x
-3x-3=x%2B5+..........2
-3-5=3x%2Bx+
-8=4x+
-8%2F4=x+
-2=x+.........now find y
y=-3x-3
y=-3%28-2%29-3
y=6-3
y=3
answer is:
A)( -2,3)