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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 3 Page 297

Substitute the given points into the Slope Formula, m= y_2-y_1x_2-x_1.

-5/3

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 In the above equation, (x_1,y_1) and (x_2,y_2) represent two points on the line. Note that it does not matter which point we use as (x_1,y_1), and which point we use as (x_2,y_2). The result of using the Slope Formula will be the same.

m=y_2-y_1/x_2-x_1

SubstitutePoints

Substitute ( - 1,2) & ( 2,- 3)

m=- 3- 2/2-( -1)

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Add and subtract terms

a-(- b)=a+b

m=- 3-2/2+1

Add and subtract terms

m=- 5/3

MoveNegNumToFrac

Put minus sign in front of fraction

m=- 5/3

The slope of the line that passes through the given points is - 53.

Subchapter links

Lesson Check p.297

Practice and Problem-Solving Exercises p.298-300

Standardized Test Prep p.300

Mixed Review p.300