Question

Find the slope of the line that contains the points named.

K(c + d, c-d), L(c-d, c+ d)

A.0
B.-1
C 1​

Answer 1

B. - 1

Explanation:

The slope of the line passing through two given points:
`m=(y_2-y_1)/(x_2-x_1)`

K(c + d, c-d) ⇒ x₁ = c + d, y₁ = c - d

L(c-d, c+ d) ⇒ x₂ = c - d, y₂ = c + d

So, the slope:

`m=(c+d-(c-d))/(c-d-(c+d))=(c+d-c+d)/(c-d-c-d)=(2d)/(-2d)=-1`