Question

Find the slope of the line $AB$ if $A(8,-9)$ and $B(-5,3)$.

Answer 1

Slope of line joining $(x_1,y_1),(x_2,y_2)$ is $\frac{y_2-y_1}{x_2-x_1}$

Here slope$=\frac{3+9}{-5-8}=\frac{12}{-13}=\frac{-12}{13}$.