Exercise 24 Page 298

Begin by finding two points on the line. Then, substitute these points into the Slope Formula. Recall that a division by zero is undefined.

Undefined

Practice makes perfect

We will begin by looking at the graph of the given vertical line.

Observing the graph, we can see that the line passes through the points ( -1, 3) and ( -1, -1). We can substitute these points into the Slope Formula to find the slope of the line. Let's do it!

m = y_2-y_1/x_2-x_1

SubstitutePoints

Substitute ( - 1,3) & ( - 1,- 1)

m=- 1- 3/- 1-( - 1)

SubNeg

a-(- b)=a+b

m=- 1-3/- 1+1

AddTerms

Add terms

m=- 1-3/0

We can see that we have a division by zero. This means that the slope is undefined. Additionally, for any vertical line, the slope is always undefined.

Subchapter links

Lesson Check p.297

Practice and Problem-Solving Exercises p.298-300

Standardized Test Prep p.300

Mixed Review p.300

Exercise 24 Page 298

Hints

Check the answer

Practice exercises

Asses your skill