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put this solution on YOUR website!Each ordered pair is two values, in the form (x,y). What we must do is substitute these values into the original equation, the first value into the "x" variable, and the second into "y". Then we see if the equation holds true, that is, does the left side of the equation equal the right side? If it does, then the ordered pair is a solution of the equation... that is, if we were to graph the equation, it would cross the point which is represented by that ordered pair. If the equation doesn't hold true, then it is not a solution.
Let's do the first problem. Is (1,7) a solution of the equation? To see if it is , we substitute
and
into the equation
. Thus:
... yes! Therefore, (1,7) IS a solution of the equation.
Let's do the same thing for (4,20):
... no! (4,20) IS NOT a solution.
(2,11):
... yes! (2,11) IS a solution.
(6,25):
... no! (6,25) IS NOT a solution.
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