Grade 8 HMH Go Math - Answer Keys Answer keys Chapter 9:Transformations and Congruence; Lesson 4: Algebraic Representations of Transformations

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Grade 8 HMH Go Math - Answer Keys

Chapter 9:Transformations and Congruence; Lesson 4: Algebraic Representations of Transformations

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Write an algebraic rule to describe each transformation.Then describe the transformation.

Question 7 (request help)
Triangle XYZ has vertices X(6, -2.3), Y(7.5, 5), and Z(8, 4). When translated, X′ has coordinates (2.8, -1.3). Write a rule to describe this transformation. Then find the coordinates of Y′ and Z′.
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Question 8 (request help)
Point L has coordinates (3, -5). The coordinates of point L′ after a reflection are (-3, -5). Without graphing, tell which axis point L was reflected across. Explain your answer.

Question 9 (request help)
Use the rule (x, y) → (x - 2, y - 4) to graph the image of the rectangle. Then describe the transformation.
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Question 10 (request help)
Parallelogram ABCD has vertices A\((-2, -5\large\frac{1}{2})\), B\((-4, -5 \large\frac{1}{2} )\),C(-3, -2), and D(-1, -2). Find the vertices of parallelogram A′B′C′D′ after a translation of \(2 \large\frac{1}{2}\) units down.
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