3B Reflections 9-2 in textbook

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3B Reflections 9-2 in textbook Objective: To find reflection images of figures

Essential Understanding When you reflect a figure across a line, each point of the figure maps to another point the same distance from the line but on the other side. The orientation of the figure reverses.

Ordered Pair: (x, y) Ordered Pair Rule: (x, y) → (x + h, y + k) Fold your graph paper into 4 equal parts Draw a coordinate plane in each part In box 1, draw a quadrilateral Translate each vertex Right 2 Down 3 Ordered Pair: (x, y) Ordered Pair Rule: (x, y) → (x + h, y + k) h is horizontal shift k is vertical shift (x, y) → (x + 2, y – 3)

Complete the following transformations on your remaining grids. Then describe the transformation. (x, y) → (– x, y) (x, y) → (x, – y) (x, y) → (– x, – y) (x, y) → (y, x) Reflection: y-axis Reflection: x-axis Rotation about the origin Reflection: y = x