this is test corrections someone please help me get the right answers and explain why it's correct! i will leave a good review for you :)

4.) The following graph shows the position of a ball over a given time frame The ball is moving left and right. Label the assumptions in the boxes below. (directional) Position (m) IVXA = OVAV Time (s) a.) What does the slope of this graph represent? The ball's height. The ball's velocity. The ball's momentum. b.) What is the instantaneous velocity at t = 3 (time of 3 seconds)? Perfect Tok but you're Still missing rise 4 units & direction run 2 +4 c.) What is the final position of the ball (in meters) ? 4: 2 = 12 meters Extra Credit (5pts): Using the same graph above, d.) At what point(s) does the ball change direction