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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 19 Page 298

Substitute the given points into the Slope Formula.

- 1

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 ( 4,4) & ( 5,3)

m=3- 4/5- 4

Subtract terms

m=- 1/1

MoveNegNumToFrac

Put minus sign in front of fraction

m=-1/1

a/a=1

m=- 1

The slope of the line that passes through the given points is - 1.

Subchapter links

Lesson Check p.297

Practice and Problem-Solving Exercises p.298-300

Standardized Test Prep p.300

Mixed Review p.300