DashboardNewsSettingsHelp
Get Premium
Dashboard
Dashboard Sign out
Big Ideas Math: Modeling Real Life, Grade 8
BI
Big Ideas Math: Modeling Real Life, Grade 8 View details
2. Slope of a Line
Continue to next subchapter

Exercise 14 Page 152

Given a graph, can you think of two different ways to find the slope?

Undefined

Practice makes perfect

Observing the given graph, we can see that the line passes through the points (-1,3) and (3,3). We can use a graph to find the slope of a line. Let's take a look at change in x and y between the given points.

We can see that the line is a vertical line so its slope is undefined. We can confirm this answer by using the formula. m = y_2-y_1/x_2-x_1 We will use the given points to solve for the slope.

m = y_2-y_1/x_2-x_1
SubstitutePoints

Substitute ( 1,3) & ( 1,-2)

m=-2- 3/1- 1
SubTerms

Subtract terms

m=-5/0
MoveNegNumToFrac

Put minus sign in front of fraction

m=-5/0

In this case, we end with a division by zero, which is undefined. We confirmed the slope is undefined.

Subchapter links expand_more
arrow_right Try It p.149-150
1
Try It 2 (Page 149)
Try It 3 (Page 149)
Try It 4 (Page 149)
5
arrow_right Self-Assessment for Concepts & Skills p.150
6
Self-Assessment for Concepts & Skills 7 (Page 150)
Self-Assessment for Concepts & Skills 8 (Page 150)
Self-Assessment for Concepts & Skills 9 (Page 150)
arrow_right Self-Assessment for Problem Solving p.151
Self-Assessment for Problem Solving 10 (Page 151)
Self-Assessment for Problem Solving 11 (Page 151)
Self-Assessment for Problem Solving 12 (Page 151)
arrow_right Review & Refresh p.152
Review & Refresh 1 (Page 152)
Review & Refresh 2 (Page 152)
Review & Refresh 3 (Page 152)
Review & Refresh 4 (Page 152)
5
6
arrow_right Concepts, Skills, & Problem Solving p.152-154
7
Concepts, Skills, & Problem Solving 8 (Page 152)
Concepts, Skills, & Problem Solving 9 (Page 152)
Concepts, Skills, & Problem Solving 10 (Page 152)
Concepts, Skills, & Problem Solving 11 (Page 152)
Concepts, Skills, & Problem Solving 12 (Page 152)
Concepts, Skills, & Problem Solving 13 (Page 152)
Concepts, Skills, & Problem Solving 14 (Page 152)
Concepts, Skills, & Problem Solving 15 (Page 153)
Concepts, Skills, & Problem Solving 16 (Page 153)
Concepts, Skills, & Problem Solving 17 (Page 153)
Concepts, Skills, & Problem Solving 18 (Page 153)
Concepts, Skills, & Problem Solving 19 (Page 153)
Concepts, Skills, & Problem Solving 20 (Page 153)
Concepts, Skills, & Problem Solving 21 (Page 153)
22
Concepts, Skills, & Problem Solving 23 (Page 153)
Concepts, Skills, & Problem Solving 24 (Page 153)
25
Concepts, Skills, & Problem Solving 26 (Page 153)
Concepts, Skills, & Problem Solving 27 (Page 153)
Concepts, Skills, & Problem Solving 28 (Page 153)
Concepts, Skills, & Problem Solving 29 (Page 153)
30
Concepts, Skills, & Problem Solving 31 (Page 154)
Concepts, Skills, & Problem Solving 32 (Page 154)
Concepts, Skills, & Problem Solving 33 (Page 154)
Concepts, Skills, & Problem Solving 34 (Page 154)
Concepts, Skills, & Problem Solving 35 (Page 154)
36
37
38
39
40
Concepts, Skills, & Problem Solving 41 (Page 154)