Regular Quiz 1 Review Part B

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Find the coordinates of the vertices of Triangle A'B'C' after Triangle ABC is dilated using the given scale factor.

A (2, 4) B (6, 8) C (10, 12); scale factor 1/2

• A'(4, 8), B'(12, 16), C'(20, 24)

• A'(1, 4), B'(3, 8), C'(5, 12)

• A'(2, 2), B'(6, 4), C'(10, 6)

• A'(1, 2), B'(3, 4), C'(5, 6)

• -6.9, -32/5, 6.72, 68%

• -32/5, -6.9, 68%, 6.72

• 68%, -32/5, 6.72, -6.9

• -6.9, -32/5, 68%, 6.72

• Circle Z, circle Y, circle X

• Circle Y, circle Z, circle X

• Circle X, circle Z, circle Y

• Circle X, circle Y, circle Z

Write an algebraic representation for the dilation and the new points.

T (-3, 5), R (-3, -5), W (4, -5)

k = 3

• (x, y) -> (1/3x, 1/3y)

  T'(-1, 5/3),

  R'(-1, -5/3),

  W'(4/3, -5/3)

• (x, y) -> (1/2x, 1/2y)

  T'(-3/2, 5/2),

  R'(-3/2, -5/2),

  W'(2, -5/2)

• (x, y) -> (3x, 3y)

  T'(-9, 15),

  R'(-9, -15),

  W'(12, -15)

• (x, y) ->(3/4x, 3/4y)

  T'(-9/4, 15/4),

  R'(-9/4, -15/4),

  W'(3, -15/4)