Rotate quadrilateral ABCD 90° counterclockwise about the origin . find the location of B’

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )