Is (4,-5) a possible solution to 5x + 2y = 8?

asked Mar 24, 2018 183k views

4 votes

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0 votes

(x,y)
(4,-5)
subsitute and see if true

sub 4 for x and -5 for y

5(4)+2(-5)=8
20-10=8
10=8
false
it is not a possible solution

Guyfromfl answered Mar 25, 2018

7.9k points

2 votes

No because x=4 and y=-5 and when you plug it in you get 5(4)+2(-5)=8 20+-10=8 and 10= does not work so it is not a possible solution.

Cel answered Mar 27, 2018

by Cel

7.6k points

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