Is the equation Y = 5C + 12 proportional and why? *

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.

Asphere has a diameter of 10 in. what is the volume of the sphere?

Solve 3x-18=2y and 5x-6y=6 by elimination show work