Question

Click on the graph until the graph of a line with undefined slope appears

Answer 1

2, In order to find the slope its rise over run, if the run is 0, we know that anything divided by 0 is undefined.

Hope this helps!

Answer 2

The slope is undefined for figure 2.

In general, when the x-values or x-coordinates is the same for both points, the slope is undefined.

For example, let us try to get the slope for a line passing through the points  (1, 3) and (1, 9)

Let x₁ = 1 , y₁ = 9 and x₂ = 1 and y₂ = 3

Slope, m = (y₂ − y₁)/((x₂ − x₁)

m = (3 − 9)/(1 − 1)

m = -6/0, which is undefined.