Question

For a line whose equation is 2x + y = 5, does point (2, 1 ) lie on it?

Answer 1

Ans: Yes , because according to (2,1) x = 2 and y = 1

Putting value in 2x + y = 5
2 (2) +1 = 5
5 = 5

Hope it helps...!!

Answer 2

Coordinates given are ( 2, 1 )

x = 2, y = 1

Putting the value of x and y in the given equation,.

2 x + y = 5

2 ( 2 ) + 1 = 5

L. H. S. = R. H. S. = 5

So, the point ( 2, 1) will lie on the equation 2x + y = 5