if it is in slope intercept form (y=mx+b), b is the y-intercept, so the point on the line that is on the y axis, and m will be the slope, or slant, of the line. Slope is rise over run, so if for example your slope is 3/4, graph a point 3 increments up and 4 to the right of your y intercept and then draw a line through those 2 points. for a negative slope just graph the second point down and to the right.
if your equation is not in slope intercept form, just isolate the y
hope this helped!