Question

Examine whether the point (2,5) lime on the graph of the equation 3x-y=1

Answer 1

$(3 \times 2) - (5) = 1$
6-5=1 therefore it is the answer

Answer 2

x=2
y=5

put them in the equation...
3x-y=1
L.H.S
3x-y
3×2-5
6-5
1

since, LHS =RHS

hence,the point (2,5) will form on the graph of the equation.