Explanation:
Slope intercept form is y=mx+b
The equation is in y=mx+b therefore
m=1/3 and b=3
To graph start with the y intercept, where x=0, y=3. Your first point is (0, 3)
Then move up 3 (Rise over Run, or y/x)
and over one and plot your second point. In this case it is (1, 6). Or you could plot the other direction, down 3 left 1, for your point (-1, 0). Then simply draw a line between 2 points and you've graphed the equation.
Small reminder :
If m is positive, you have an increasing slope and the line will look sort of like this /
If m is negative, you have an decreasing slope and the line will look sort of like this \
