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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Rate of Change and Slope

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Exercise 22 Page 298

Substitute the given points into the Slope Formula.

-1/3

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,- 3) & ( 5,- 4)

m=- 4-( - 3)/5- 2

▼

Add and subtract terms

a-(- b)=a+b

m=- 4+3/5-2

Add and subtract terms

m=- 1/3

MoveNegNumToFrac

Put minus sign in front of fraction

m=-1/3

The slope of the line that passes through the given points is - 13.

Subchapter links

Lesson Check p.297

Practice and Problem-Solving Exercises p.298-300

Standardized Test Prep p.300

Mixed Review p.300