Hope this is clear enough

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Which expression gives you the distance between the points (5,1)and(9,-6)

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that