Hi! please help me. im slow

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′?

Can someone me with the property questions for 12 13 and 14 plz

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*