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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Adding and Subtracting Polynomials

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Exercise 62 Page 491

Substitute the given points into the Slope Formula.

-2/3

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 ( 9,-6) & ( 0,0)

m=0-( -6)/0- 9

▼

Add and subtract terms

a-(- b)=a+b

m=0+6/0-9

Add and subtract terms

m=6/-9

▼

Simplify

MoveNegNumToFrac

Put minus sign in front of fraction

m=- 6/9

a/b=.a /3./.b /3.

m=- 2/3

The slope of the line that passes through the given points is - 23.

Subchapter links

Lesson Check p.489

Practice and Problem-Solving Exercises p.489-491

Standardized Test Prep p.491

Mixed Review p.491