Name the property 14*1/14=1

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

What is sin 7x/4 ? i need on this urgent trig