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Pearson Algebra 2 Common Core, 2011

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Pearson Algebra 2 Common Core, 2011 View details

3. Linear Functions and Slope-Intercept Form

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Exercise 61 Page 79

Substitute the given points into the Slope Formula.

15/2

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 ( 0,-1/2) & ( 7/5,10)

m=10-( -1/2)/7/5- 0

▼

Add and subtract terms

a-(- b)=a+b

m=10+1/2/7/5-0

Subtract term

m=10+1/2/7/5

a = 2* a/2

m=20/2+1/2/7/5

Add fractions

m=21/2/7/5

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.a /b./.c /d.=a/b*d/c

.a /b./.c /d.=a/b*d/c

m=21/2*5/7

Multiply fractions

m=21*5/2*7

a/b=.a /7./.b /7.

m=3*5/2*1

Multiply

m=15/2

The slope of the line that passes through the given points is 152.

Subchapter links

Lesson Check p.78

Practice and Problem-Solving Exercises p.78-80

Standardized Test Prep p.80

Mixed Review p.80