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Pearson Geometry Common Core, 2011 View details

5. Probability Models

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Exercise 26 Page 855

Use the Midpoint Formula.

(-4,3)

Practice makes perfect

To find the midpoint, we can use the Midpoint Formula. (x_1+x_2/2,y_1+y_2/2) The coordinates of the given endpoints are (-3,9) and (-5,-3). Let's use these to find the coordinates of the midpoint.

M(x_1+x_2/2,y_1+y_2/2)

SubstitutePoints

Substitute ( -3,9) & ( -5,-3)

M(-3+( -5)/2,9+( -3)/2)

AddNeg

a+(- b)=a-b

M(-3-5/2,9-3/2)

SubTerms

Subtract terms

M(-8/2,6/2)

CalcQuot

Calculate quotient