Question

Witch graph has a line with an undefined slope ?

Answer 1

The slope (m) of a graph can be calculated using the formula:

`\begin{gathered} m=\text{ }\frac{\Delta\text{ y}}{\Delta x} \\ =(y_2-y_1)/(x_2-x_1) \end{gathered}`

An undefined slope occurs when:

`\Delta x\text{ = 0}`

This implies that the x-coordinates never change no matter what the y-coordinate is.

Hence, the graph of the line slope of undefined is Option C