Question

How do you find the slope of this graph?

Answer 1

to get the slope of any straight line, we simply need two points off of it, let's use those two in the picture below.

`\stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{-1}-\stackrel{y1}{4}}}{\underset{\textit{\large run}} {\underset{x_2}{4}-\underset{x_1}{4}}} \implies \cfrac{ -5 }{ 0 } \implies unde fined`

bear in mind that all vertical lines have a undefined slope, same as all horizontal ones have a slope of 0.