Which of the following are not polynomials?

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.