Question 929820
Start with your intercept. 
(0,b)
Plot that point. 
Now use the slope.
Slope is change in y over change in x.
So for each -6 change in y, there is a +1 change in x.
Another point would then be 
(0,b)+(1,-6)=(1,b-6)
Plot that point.
Then draw the line containing those two points. 
Done.