1 solution: (-1,-3)
1) Since we are going to solve these systems graphically, let's begin by setting one pair of t-tables:
b) 2x-y=1, y=-3
2x-y=1 ⇒-y= 1 -2x ⇒ y=2x-1
Now, let's plot those points and trace one increasing line for the first one, and one horizontal line for the constant function y=-3
2) Plotting that system, we can tell the solution is the common point to both equations:
Thus, the answer is (-1,-3)
