To encourage new customers, a movie theater is offering different ways to pay for the movie. Members pay a one time fee of $75 and then $2 per movie they watch.

Non-members pay $5.75 per movie they watch.

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.

What are the values of each variable in the diagram below?

Can someone tell me if this is perpendicular? !