Question

Find the slope of the line through each pair of points.

1. (19, -16), (-7, -15)
2. (-4, 7), (-6, -4)
3. (20, 8), (9, 16)

Answer 1

Explanation:

1)

`( y_(2) - y_(1))/(x_1 - x_2)`

`( - 15 - ( - 16))/( - 7 - ( + 19))`

`( - 15 + 16)/( - 7 - 16)`

`( + 1)/( - 23)`

`- (1)/(23)`

2)

`( - 4 - 7)/( - 6 - ( - 4))`

`( - 11)/( - 2)`

`+ (11)/(2)`

3)

`(16 - 8)/(9 - 20)`

`(6)/( - 11)`

`- (6)/(11)`