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Yes, since (1,2) satisfies y = x + 1 y = (1) + 1 y = 2 and 2 = 2
There is one solution for x and one solution for y. The solution is: x = -1 ; y = 2
y = 3, x = 1 y = 4, x = 2 Anything where y is two greater than x will work.
Yes if x=2 and y=2, then x=y
There are infinitely many "solutions". In the Cartesian plane, the coordinates of any point on the line defined by y = x + 2 is a solution. Thus, any ordered pair, (x, x+2) is a solution.