body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Core Connections Algebra 1, 2013

CC

Core Connections Algebra 1, 2013 View details

2. Section 3.2

Continue to next subchapter

Exercise 43 Page 108

Use the Slope Formula.

B

Practice makes perfect

A line's slope can be calculated by substituting the two points, (- 7,10) and (1,4), in the Slope Formula.

m=y_2-y_1/x_2-x_1

SubstitutePoints

Substitute ( 1,4) & ( -7,10)

m=4- 10/1-( -7)

a-(- b)=a+b

m=4-10/1+7

Add and subtract terms

m=-6/8

MoveNegNumToFrac

Put minus sign in front of fraction

m=-6/8

a/b=.a /2./.b /2.

m=-3/4

The slope of the line corresponds to option B.

Subchapter links

3.2.1 Equations - Algebra Tiles p.107-108

3.2.2 Exploring an Area Model p.110-111

3.2.3 Multiplying Binomials and the Distributive Property p.114

3.2.4 Using Generic Rectangles to Multiply p.118