Question 331800
Solve by graphing.
1. y=x-1
y=-x+7
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These are linear eqns, so they're straight lines.
Find 2 points for each eqn, then draw a line thru them.
eg, y = x-1
Pick 2 values for y and find x
x=0, y=-1 --> (0,-1) point 1
x=5, y=4 --> (5,4) point 2
Plot the 2 points, draw a line thru them.
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Do the same for the other equation.
Where they intersect is the solution to the system.