[tex]\huge\text{Answer:}[/tex]
[tex]\huge\mathrm{The~slope~is~0.}\checkmark[/tex]
[tex]\huge\text{Solution:}[/tex]
[tex]\huge\mathcal{HOW~TO~FIND~THE~SLOPE:}[/tex]
[tex]\displaystyle\frac{y2-y1}{x2-x1}[/tex]
However, there's a shortcut!
If you notice, the y-coordinates of the given 2 points are the same.
Now, if a line passes through 2 points with the same y-coordinates, then its slope is 0.
Hope you find it helpful.
Feel free to ask if you have any doubts.
[tex]\bold{-MistySparkles^**^*}[/tex]