\"Slope\"\"

\

Observe that y-coordinates of two points are same.

\

Therefore the line is, horizontal, and then the slope is zero.

\

Verify the solution:

\

The slope formula is \"\".

\

\"\"                          (Replace \"\" and \"\" with \"\" and \"\")

\

\"\"                          (Apply Additive inverse property: \"\")

\

\"\"                                (Subtract: \"\")

\

\"\"                                      (Divide: \"\")\"\"

\

The slope of m is zero.