How do you find the slope for (0,-1); (4,7)?

Mar 25, 2018

See a solution process below:

Explanation:

The formula for find the slope of a line is:

$m = \frac{\textcolor{red}{{y}_{2}} - \textcolor{b l u e}{{y}_{1}}}{\textcolor{red}{{x}_{2}} - \textcolor{b l u e}{{x}_{1}}}$

Where $\left(\textcolor{b l u e}{{x}_{1}} , \textcolor{b l u e}{{y}_{1}}\right)$ and $\left(\textcolor{red}{{x}_{2}} , \textcolor{red}{{y}_{2}}\right)$ are two points on the line.

Substituting the values from the points in the problem gives:

$m = \frac{\textcolor{red}{7} - \textcolor{b l u e}{- 1}}{\textcolor{red}{4} - \textcolor{b l u e}{0}} = \frac{\textcolor{red}{7} + \textcolor{b l u e}{1}}{\textcolor{red}{4} - \textcolor{b l u e}{0}} = \frac{8}{4} = 2$