Pg 314 (326) - Q17
What is the slope of a line that passes through the origin and the point (-2,-1)? Remember that your slope is equal to rise over run. Well, this one goes up 1 because it's going from -1 to the origin; and, it's going over 2 because it's going from -2 to the zero line. Therefore, you've got a slope of 1/2, or B.