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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

9. Perfect Squares

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Exercise 89 Page 71

Substitute the given points into the Slope Formula.

Undefined

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 ( - 5,4) & ( - 5, -1)

m=-1- 4/- 5-( - 5)

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Add and subtract terms

a-(- b)=a+b

m=-1-4/- 5+5

Add and subtract terms

m=-5/0

Note that we cannot calculate the quotient above. Therefore, the slope of the line passing through this pair of points is undefined.

Subchapter links

Exercises p.68-71