Question

What is the slope of the line through (-1.-7) and (3.9)?

Answer 1

slope = 4

Explanation:

Calculate the slope m using the slope formula

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

with (x₁, y₁ ) = (- 1, - 7 ) and (x₂, y₂ ) = (3, 9 )

m =
`(9-(-7))/(3-(-1))` =
`(9+7)/(3+1)` =
`(16)/(4)` = 4