Question

A line with a slope of 8 passes through the points (-1,1) and (0,k). What is the value of k?

Answer 1

k = 9

Explanation:

Calculate the slope m using the slope formula and equate to 8

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

with (x₁, y₁ ) = (- 1, 1) and (x₂, y₂ ) = (0, k)

m =
`(k-1)/(0+1)` = k - 1 = 8 ( add 1 to both sides )

k = 9