Question

Is the point (2, 2.5) on the graph of y=x+2?  How do you know?

Answer 1

2 = x and 2.5 = y
y = x + 2
2.5 = 2 + 2 No never
2.5 ≠ 4
So it is NOT

Answer 2

`(2, 2.5) , \ \ x=2, \ \ y = 2.5 \\ \\ y=x+2 \\ \\2.5 = 2+2 \\ \\ 2.5\\eq 4 \\ \\ point \ (2,2.5) \ does \ not \ belong \ to \ the \ graph`