How do you complete the ordered pair (5, y) given –5x + y = –4?

1 Answer
Alan P.
Aug 24, 2016

(5,y)=color(green)(5,21)(5,y)=5,21

Explanation:

(5,y)(5,y) implies x=5x=5

Substituting color(red)(5)5 for xx in -5x+y=4−5x+y=4 gives

color(white)("XXX")-5color(red)(xx5)+y=4XXX−5×5+y=4

color(white)("XXX")-25+y=-4XXX−25+y=−4

color(white0("XXX")y=21

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