Question

Tutoria

A line has a slope of -7 and includes the points (-9, 7) and (-8,k).
What is the value of k?
k =

Answer 1

k= 0

Explanation:

`\boxed{ slope = (y _(1) - y_2 )/(x_1 - x_2) }`

where (x₁, y₁) is the first coordinate and (x₂, y₂) is the second coordinate

`- 7 = (k - 7)/( - 8 - ( - 9))`

`- 7 = (k - 7)/( - 8 + 9)`

`- 7 = (k - 7)/(1)`

k -7= -7

+7 on both sides:

k= -7 +7

k= 0