Question

What is the slope of a line that with the points (0, -1) (-1, 1)?

Answer 1

m = - 2

Explanation:

To find the slope of a line joining 2 points use the gradient formula.

`m = ( y_2 - y_1 )/(x_2 - x_1)`

where `(x_1 , y_1 ) = (0 , - 1 ) , (x_2 , y_2 ) =( - 1 , 1 )`

( substitute values into formula )

`m =( 1 - (-1 ))/(-1 - 0 ) = 2/-1 = - 2`