Do it in three steps.


(1)  Find y-intercept.  

     For it, substitute x= 0 into the equation and get y= 3.
     Thus y-intercept is the point (0,3).
     Draw this point and call it A.


(2)  Then use the slope. From the given equation, the slope is 2.

     From the y-intercept point (0,3), go 1 unit  horizontally to the right parallel to x-axis
                                      and 2 units vertically   up parallel to y-axis.
     You will arrive to the point (1,5).
     Draw this point and call it B.


(3)  Using a straightedge and a pencil, connect two points A and B by the pencil.
     It will give you the desired line.