Question

Which is the slope of a line through the points (-1, 2) and (5, 8)?

A. m = 1
B. m = 5/2
C. m = 5/3
D. m = 2

Answer 1

A

Explanation:

Calculate the slope m using the slope formula

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

with (x₁, y₁ ) = (- 1, 2) and (x₂, y₂ ) = (5, 8 )

m =
`(8-2)/(5+1)` =
`(6)/(6)` = 1 → A