The coordinates of points A and B are (-3k - 1. k+ 3) and (k + 3. 3k + 5) respectively. where k is a constant (k-1). find and simplify the gradient of AB, showing that it is independent of k.

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.