Question 165716
I'm assuming that the equation is {{{y-x=5}}} right ? If I'm wrong, let me know.


Since we have the ordered pair (2,7), this means that {{{x=2}}} and {{{y=7}}}



{{{y-x=5}}} Start with the given equation



{{{7-2=5}}} Plug in {{{x=2}}} and {{{y=7}}}



{{{5=5}}} Subtract



Since the equation is true, this means that ordered pair (2,7) is a solution to the equation {{{y-x=5}}}