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# W arm UP 3-25-13 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)

## Presentation on theme: "W arm UP 3-25-13 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)"— Presentation transcript:

W arm UP 3-25-13 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)

Warm up 3-26-13 Which one is even, odd, or neither? 1.f(x) = x 2.f(x) = 2x 2 + 4 3. odd even neither

Translations

Translate the image by (x – 8, y + 2)

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

Find the pre-image (x + 12, y – 17)

Reflections

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

Reflect across the x-axis

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

Reflect across the y-axis

Reflect across the line y = x Swap x and y

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

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

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

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

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

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

Classwork Reflections by Mira Worksheet

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.

Review Homework

Skills Check Are you ready?

Rotations

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

Rotate 90° clockwise about the origin

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

Rotate 90° counterclockwise about the origin

Rotate 180  about the Origin ONLY Change the signs

Rotate 180° about the origin

Classwork Rotations Practice Worksheet

Homework Rotations HW Worksheet

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