Question

Does (4,3) lie on the graph of 4x + y = 5

Answer 1

put x= 4, y =3

4(4) + 3 = 16 + 3 = 19 which is not equal to 5

hence it does not lie

Answer 2

Let's put the x - ordinate and check if the y - ordinate occurs.
4x + y = 5
4(4) + y = 5
16 + y = 5
y = 5 - 16
y = -11
The y - ordinate does not satisfy.
So the point does not lie on the graph.
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