Answer
$m=0$
Work Step by Step
$\bf{\text{Solution Outline:}}$
Use the Slope Formula to find the slope of the line passing through the given points $\left(
0,-7
\right)$ and $\left(
3,-7
\right).$
$\bf{\text{Solution Details:}}$
With the given points,
\begin{array}{l}\require{cancel}
y_1=
-7
,\\y_2=
-7
,\\x_1=
0
,\text{ and }\\ x_2=
3
.\end{array}
Using $m=\dfrac{y_1-y_2}{x_1-x_2}$ or the Slope Formula, the slope, $m,$ of the line is
\begin{array}{l}\require{cancel}
m=\dfrac{-7-(-7)}{0-3}
\\\\
m=\dfrac{-7+7}{0-3}
\\\\
m=\dfrac{0}{-3}
\\\\
m=0
.\end{array}
