okay for question 11 you have to solve for be because slope intercept form is y=mx+b and they give you your slope which is m and also x and y.
so y=-1 x=-9
-1=-1/3(-9)+b.... -1/3*-9/1=9/3=3
-1=3=b so now we carry over the 3
-3 -3
-4=b
so your equation is y=-1/3x-4
