Answer
a. point C
b. point A
c. no points
d. point A, point B, point C
Work Step by Step
a. At point C, the slope is positive so the object is speeding up.
b. At point A, the slope is negative so the object is slowing down.
c. At no point is the velocity negative, so the object is not moving to the left anywhere.
d. At point A, point B, and point C, the velocity is positive, so the object is moving to the right at all points.