Can someone pls help me with some Unit Circle problems?

Given the graph below state whether or not the relation is a function, and give the domain and range.

When lulu enlarged her drawing of a rabbit, the enlarged picture appeared to be distorted. which statement about the transformation applied to her drawing is true?

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.