3 years ago

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

2 answers:

7 0

(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

vitfil [10]3 years ago

4 0

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.

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