Question

What is the slope of the line that contains the points (9,-4) and (1, -5)

А 1/8
B. -1/8
C.-1
D. 1

Answer 1

The answer is A.

Explanation:

Given that the formula to find gradient, m, is :

`m = (y2 - y1)/(x2 - x1)`

Then, you have to substitute the coordinates into the formula :

`let \: (9, - 4) \: be \: (x1,y1) \\ let \: (1, - 5) \: be \: (x2,y2)`

`m = ( - 5 - ( - 4))/(1 - 9)`

`m = ( - 5 + 4)/( - 8)`

`m = ( - 1)/( - 8)`

`m = (1)/(8)`

Answer 2

A. 1/8

Explanation:

m = rise/run

m = (y2-y1)/(x2-x1)

m = (-5- - 4)/(1-9)

m = (-5+4)/(-8)

m = (-1)/(-8)

m = 1/8