Divide 33 photos into two groups so the ratio is 4 to 7

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.

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Which graph represents the parent function of y=(x+2)(x-2)