Question

What is the slope of the line that passes through the points (2,1) and (8,9)?

Answer 1

-1

Explanation:

To calculate slope:

m=
`(rise)/(run)`=
`(y_(2)-y_(1) )/(x_(2) -x_(1) )`

(
`x_(1)` and
`y_(1)`)= coordinates of the first points in the line

(
`x_(2)` and
`y_(2)`)= coordinates of the second points in the line.

So slope =

`(9-8)/(1-2)`=
`(1)/(-1)`

1 divided by -1 is -1

HOPE THIS HELPED