Question 268582
The graphs are 2 straight lines. 2 points is sufficient to plot a straight line.
Where they cross is the solution.
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y = -x/3 - 1
Pick 2 values for x and find y.
x...y
0...-1 --> (0,-1)
6...-3 --> (6,-3)
Plot the 2 points, draw a line thru them
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Do the same for the 2nd eqn.
Where they cross is the solution.