Find the slope of a line joining the given points.
 
\((12,12)\) and \((12,-6)\)
 
Answer:
 
The slope of the line through \((x_1, y_1)\) and \((x_2, y_2)\), with \(x_1 \ne x_2\) is:
 
m=iiiiiiii
 
 
The slope of of a line joining the given points is .