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Verified Answer :

sdmatera

To check if this point lies on the line, plug in a 2 for x and a y for 1 and solve

x+2y=5
2+2(1)=5
4=5

Since this statement isn't true, then the point doesn't lie on the line

Hope this helps

apologiabiology

(x,y)
(2,1)
that means x=2 and y=1 is true, or is it?
just subsitute 2 for x and 1 for y and see if you get a true statement

2+2(1)=5
2+2=5
4=5
false
it is not on the line

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