Question

What is the slope of the line through (1, -1) and (5,-7) ?

Answer 1

-3/2

Explanation:

(x1, y1) = (1, -1)

(x2, y2) = (5, -7)

slope of the line, m = y2 - y1 / x2 - x1

=( -7 + 1 ) / (5 - 1)

= -6 / 4

= -3 / 2