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.

McGraw Hill Glencoe Algebra 2, 2012

MH

McGraw Hill Glencoe Algebra 2, 2012 View details

3. Rate of Change and Slope

Continue to next subchapter

Exercise 6 Page 79

Substitute the given points into the Slope Formula.

- 3

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 ( - 2,- 5) & ( - 7,10)

m=10-( - 5)/- 7-( - 2)

▼

Add and subtract terms

a-(- b)=a+b

m=10+5/- 7+2

Add terms

m=15/- 5

▼

Simplify

MoveNegDenomToFrac

Put minus sign in front of fraction

m=- 15/5

Calculate quotient

m=- 3

The slope of the line that passes through the given points is - 3.

Subchapter links

Check Your Understanding p.79

Practice and Problem Solving p.79-81

H.O.T. Problems p.81

Standardized Test Practice p.82

Spiral Review p.82

Skills Review p.82