B’ (-18, 20) A’ (-21, 4) T’ (13, -11) Translate (x – 9, y + 8)

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Presentation transcript:

B’ (-18, 20) A’ (-21, 4) T’ (13, -11) Translate (x – 9, y + 8) Warm up Translate (x – 9, y + 8) B (-9, 12) A (-12, -4) T (22, -19) B’ (-18, 20) A’ (-21, 4) T’ (13, -11)

Interactive Notebook P 35 MCC912.A.REI.5 Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.

Interactive Notebook P 37 MCC912.A.REI.8 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables.

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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 y = x Swap x and y

Reflect across y = x

Reflect across y = -x Swap and change both signs

Reflect across 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