Z-x/3=y solve for z

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

When you answer this can you explain

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′?