What is the measure for

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

How many square centimeters of wrapping paper will be used to wrap the shoe box?