Each ordered pair is (x,y). Determine the coordinates by substitution.
for (15,y):
y=1/3 * 15 - 9
y=-4
for (x,-6):
-6=1/3x -9
1/3x=3
x=9
You don't even have to actually do the division to find the correct answer.
The leading term of q(x) is x³/x² = x, so only the 1st and 3rd selections are appropriate.
The remainder r(x)/b(x) will have the divisor as b(x), so only ...
.. the 1st selection is appropriate.
Answer:
The answer is Identity Property of Addition :D

Let's find the slope :
taking :
now, we know the formula to find the slope, that is :
The graph lines stay the same, however the y-intercept changes from (-1,0) to (-2,0), since it is now g(x) = x - 2, instead of f(x) = x - 1.