Vote you brainiest please help me

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 is the y-intercept of the line given by the equation

How many solutions does the nonlinear system of equations graphed below have?