Determine which ordered pair is a solution of y=x^2 - 2.

2 answers

no choices given, but pick any x, say, x=0
and then y = -2
so (0,-2) is a solution
Another way to check whether (x,y) is a solution of y = x^2 - 2 is to substitute x and y into the equation and see if it is true. For example, if we take (0,-2):

y = x^2 - 2
-2 = 0^2 - 2 (substitute x=0, y=-2)
-2 = -2 (simplify)
Yes, this is true, so (0,-2) is a solution.