SOLUTION: Instructions: Solve each system of equations by graphing. If the two equations produce parallel lines, write no solution. If the two equations produce the same line, write infinite

Algebra ->  Algebra  -> Systems-of-equations -> SOLUTION: Instructions: Solve each system of equations by graphing. If the two equations produce parallel lines, write no solution. If the two equations produce the same line, write infinite      Log On

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Question 60047: Instructions: Solve each system of equations by graphing. If the two equations produce parallel lines, write no solution. If the two equations produce the same line, write infinite number of solutions.
What is the solution for x-y=3
x+y=-1



Answer by tutorcecilia(2105) About Me  (Show Source):
You can put this solution on YOUR website!
Re-write each equation in the slope-intercept form (y=mx+b) by solving for y]
x-y=3
-y=-x+3
y=x-3 [Graph]
.
x+y=-1
y=-x-1 [Graph]
Points of intersection:(1, -2)
Graphing:
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+x-3%2C+-x-1%29+