SOLUTION: Use the graph to determine whether each system has no solution, one solution, or infinetly many solutions.. 1. Y=x-1 Y=-x+1 2. X-y=-4 Y=x+4 3. Y=x+4 2x-2y=2 4. Y=2x-3 2x-2y

Question 632762: Use the graph to determine whether each system has no solution, one solution, or infinetly many solutions..
1. Y=x-1
Y=-x+1
2. X-y=-4
Y=x+4
3. Y=x+4
2x-2y=2
4. Y=2x-3
2x-2y=2
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Use the graph to determine whether each system has no solution, one solution, or infinetly many solutions..
1. Y=x-1
Y=-x+1
-----------
These are straight lines, so you need 2 points.
y = x-1
Pick 2 values for x and find y.
Plot the 2 points.
Draw a line thru them.
==============
The intersection (if any) is the solution.
Do the others the same way.
----------------------------------------
2. X-y=-4
Y=x+4
3. Y=x+4
2x-2y=2
4. Y=2x-3
2x-2y=2
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