Answer:
Option A is correct .i.e., Slope is -1.
Step-by-step explanation:
Given points are K(c+d , c-d) & L(c-d , c+d)
[tex]Slope\:of\:line=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]Slope\:of\:line\:KL=\frac{c+d-(c-d)}{c-d-(c+d)}[/tex]
[tex]=\frac{c+d-c+d}{c-d-c-d}[/tex]
[tex]=\frac{2d}{-2d}[/tex]
[tex]=-1[/tex]
Therefore, Option A is correct .i.e., Slope is -1.
