Please can someone help me I can’t fail this test

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.

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1