Answer:
[tex]y = \frac{x}{2} \\ [/tex]
The equation is in the form y=kx, where k=1/2 and it passes through the origin whose slope is 1/2
Moreover, the value of y increases with the value of x
Therefore, the equation y=x/2 represent a proportional relationship
4) Yes, because it's graph is a line that passes through the origin.
