Find the gradients of the lines that pass through the points.

a) [[$ (1, 1) $]] and [[$ (4, 4) $]]



Answer: The gradient of the line is .

b) [[$ (3, 4) $]] and [[$ (5, 6) $]]



Answer: The gradient of the line is .

c) [[$ (-1, 3) $]] and [[$ (3, -1) $]]



Answer: The gradient of the line is .

d) [[$ (0, 0) $]] and [[$ (5, 3) $]]



Answer: The gradient of the line is .