Question:
Solution:
By definition, the slope of the line is given by the following equation:

where (X1,Y1) and (X2,Y2) are points on the line. In this case, take any two points on the line and replace them in the above equation. Take for example:
(X1,Y1) =(-3,3)
(X2,Y2) = (3,0)
then we have:

we can conclude that the correct answer is:
