Question

The point (2, 3) is on the line given by which equation below?
y=x-1
y=3x
y=x+1
y=-3x

Answer 1

The point (2, 3) is on the graph y=x+1

Answer 2

Plug in the points and see if y and x are equal to each other.

(2,3)
y= x-1
3= 2-1 
3= 1 (not the solution)

y=3x
3=3*3
3=9 (not the solution)

y=x+1
3=2+1
3=3 (solution) We can check to make sure.

y=-3x
3=-3*3
3=-9 (not the solution)

y=x+1 is the answer.

I hope this helps!
~kaikers