Polynomial functions with an even degree have y-axis symmetry?

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

Joanie watched 1 out of three of a movie in the morning