Question

How do I put the slope and y-intercept on the graph

Answer 1

So as you can see, -3 is the y-intercept. You would make a point on (-3,0) first. Then from the point, you would go up 1 and go right 2 because the slope is a positive 1/2 slope. 

Answer 2

In order to graph an equation, you must first need to have a y-intercept to know where your starting point is.