Question

What is the slope of the line that passes through the points (1, 7) and (–4, –8)?

A. -3

B. -1/3

C. 1/3

D. 3

Answer 1

\(\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
&({\color{red}{ 1}}\quad ,&{\color{blue}{ 7}})\quad &({\color{red}{ -4}}\quad ,&{\color{blue}{ -8}})
\end{array}
\\\quad \\

slope = {\color{green}{ m}}= \cfrac{rise}{run} \implies \cfrac{{\color{blue}{ y_2}}-{\color{blue}{ y_1}}}{{\color{red}{ x_2}}-{\color{red}{ x_1}}}\)

Answer 2

huh?