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.

Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

2. Slope of a Line

Finish the assignment

Continue to next subchapter

Exercise 4 Page 149

Substitute the given points into the Slope Formula.

Undefined

Practice makes perfect

We can calculate the slope by substituting the given points into the Slope Formula. m = y_2-y_1/x_2-x_1 Note that it does not matter which point we choose to use for ( x_1, y_1) and ( x_2, y_2), since the result of using the Slope Formula will be the same.

m=y_2-y_1/x_2-x_1

SubstitutePoints

Substitute ( -3,-3) & ( -3,-5)

m=-5-( -3)/-3-( -3)

a-(- b)=a+b

m=-5+3/-3+3

Add terms

m=-2/0

In this case, we have a division by zero, which is undefined. This means that the slope is undefined and the given line is vertical.

Subchapter links

Try It p.149-150

Self-Assessment for Concepts & Skills p.150

Self-Assessment for Problem Solving p.151

Review & Refresh p.152

Concepts, Skills, & Problem Solving p.152-154