y = 2-x or x+y = 2
2x+2y = 4
x+y = 2
the two equations are the same
so there is an infinite number of solutions.
solve each system graphically. if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this.
y = 2 - x
2x + 2y = 4
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