Big Ideas Math Geometry, 2014
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Big Ideas Math Geometry, 2014 View details
1. Translations
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Exercise 24 Page 179

Find how many units were moved horizontally and vertically between each image and preimage.

First Translation: (x,y)→(x+6,y-4)
Second Translation: (x,y)→(x-6,y)

Practice makes perfect

In this exercise, two translations have been performed. We will start by writing the transformation from the preimage DEFG to the image D'E'F'G'.

Translation from DEFG to D'E'F'G'

We can see in the given graph that D'E'F'G' is a translation right 6 units and down 4 units of DEFG.

Vertical translations affect the y-coordinate and horizontal translations affect the x-coordinate. We can use this to write the translation from the preimage DEFG to the image D'E'F'G'. (x,y)→(x +6,y -4)

Translation from D'E'F'G' to D''E''F''G''

From the given graph we see that D''E''F''G'' is a translation left 6 units of D'E'F'G'.

Again, keep in mind that vertical translations affect the y-coordinate and horizontal translations affect the x-coordinate. Let's write the translation from D'E'F'G' to the image D''E''F''G''. (x,y)→(x -6,y +0)