How can you tell that a line segment connecting two points is vertical without graphing the points

Find the 6th term of the expansion of (2p - 3q)11. a. -7,185,024p4q7 c. -7,185p4q7 b. -7,185,024p6q5 d. -7,185p6q5 select the best answer from the choices provided a b c d

Answer! if you don’t mind, can you explain

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.