SOLUTION: USE THE GRAPHING METHOD TO TELL HOW MANY SOLUTIONS THE SYSTEM HAS: x+y=8 x+y=-1

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Question 25265: USE THE GRAPHING METHOD TO TELL HOW MANY SOLUTIONS THE SYSTEM HAS:
x+y=8
x+y=-1
Found 2 solutions by ashleygurl92, jam123:
Answer by ashleygurl92(6) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=8
x+y=-1

multiply the bottom one by -1 to eliminate
x+y=8
-1(x+y=-1)
rewrite the problem
x+y=8
-x-y=-1
the x & y eliminates so tou're left with 0=9 which is NO SOLUTION because 0 doesn't equal 0... hope i helped!

Answer by jam123(18) About Me  (Show Source):
You can put this solution on YOUR website!
x+y = 8, so
y = 8-x
x+y=-1 so
y=-1-x
+graph%28+700%2C+700%2C+-5%2C+5%2C+-5%2C+5%2C+8-x%2C+-1-x%29+
The lines are parallel so there are no solutions.