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W arm UP Translate (x – 9, y + 8) 1.B (-9, 12) 2.A (-12, -4) 3.T (22, -19) B’ (-18, 20) A’ (-21, 4) T’ (13, -11)

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Warm up Which one is even, odd, or neither? 1.f(x) = x 2.f(x) = 2x odd even neither

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Translations

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Translate the image by (x – 8, y + 2)

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Translate the image by (2x + 2, y – 3)

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Find the pre-image (x + 12, y – 17)

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Reflections

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Reflect across the x-axis Change the sign of the y-value

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Reflect across the x-axis

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Reflect across the y-axis Change the sign of the x-value

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Reflect across the y-axis

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Reflect across the line y = x Swap x and y

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Reflect across y = x Reflect across the line y = x

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Reflect across y = -x Swap and change both signs Reflect across the line y = -x

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Reflect across y = -x Reflect across the line y = -x

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Lines of Symmetry How many lines of symmetry does the polygon have? 3

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Lines of Symmetry How many lines of symmetry does the shape have? 2

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Lines of Symmetry How many lines of symmetry does the shape have? 5

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Classwork Reflections by Mira Worksheet

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Warm up 1.A function is even. Point A(-3, 4) is on the even function. Name another point. 2.A function is even. Point B(9, 2) is on the even function. Name another point. 3.Reflect C(-5, -3) over the y-axis. 4.Reflect D(2, -4) over the x-axis. 5.Reflect E(-12, 4) over y = -x.

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Review Homework

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Skills Check Are you ready?

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Rotations

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Rotate 90 Clockwise about the Origin (Same as 270 Counterclockwise) Change the sign of x and switch the order

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Rotate 90° clockwise about the origin

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Rotate 90 Counterclockwise about the Origin (Same as 270 Clockwise) Change the sign of y and switch the order

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Rotate 90° counterclockwise about the origin

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Rotate 180 about the Origin ONLY Change the signs

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Rotate 180° about the origin

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Classwork Rotations Practice Worksheet

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Homework Rotations HW Worksheet

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