# How do you find the slope for (4,2) and (4,5)?

##### 1 Answer

Sep 18, 2015

The line through

#### Explanation:

For two points

#m=(Delta y)/(Delta x) = (y_2-y_1)/(x_2-x_1)# if

#(x_2-x_1) != 0#

but in this case

and therefore the slope is undefined.