8th Grade Math Unit 3 Review -Transformations

Front

Dilation of Triangle KID with vertices K(-5,2), I(-10,2), D(-5,6) to K'(-5/3, 2/3), I'(-10/3, 2/3), D'(-5/3, 2).

Back

(x,y) → (1/3x, 1/3y)

Front

Quadrilateral HIJK is rotated 180 degrees to form quadrilateral H'I'J'K'. Which statement is true?

Back

The angle measure of H is equal to the angle measure of H'

Front

Which transformation does NOT preserve congruence? (x,y)----- > (5/2 x, 5/2 y), (x,y)----- > (-x, y), (x,y)----- > (-y , x), (x,y)----- > (x + 3, y - 2)

Back

(x,y)----- > (5/2 x, 5/2 y)

Front

James has two similar pieces of plywood. The dimensions of the first piece is 1.5 times the corresponding dimensions of the second piece. Which statement about the area is true?

Back

The area of the first piece will be 2.25 times the area of the second piece.

Front

Which algebraic expression describes the transformation? Options: (x, y) ----- > ( x - 2 , y + 2), (x, y) ----- > ( -2x, -2y), (x, y) ----- > ( 0.5x , 0.5y), (x, y) ------- > ( x+ 2, y+2)

Back

(x, y) ----- > ( 0.5x , 0.5y)

Front

Which proportion must be true if the 2 trapezoids are similar? Options: AB/BD = LM/OP, AC/LO = CD/OP, BD/AB = OP/MP, MP/ LM = CD/AC

Back

AC/LO = CD/OP

Front

Which of the following algebraic representations do NOT show a dilation? Options: (x, y) --------> (2/3x, 2/3y), (x, y) --------> (5x, 3/2y), (x, y) --------> (1.5x, 1.5y), (x, y) --------> (3x, 3y)

Back

(x, y) --------> (5x, 3/2y)

Front

Which of the following algebraic representations do NOT show an enlargement? Options: (x, y) -> (4/3x, 4/3y), (x, y) -> (x +5, y + 2/3), (x, y) -> (2x, 2y), (x, y) -> (1.5x, 1.5y)

Back

(x, y) -> (x +5, y + 2/3)

Front

Triangle WHY was dilated to form W'H'Y' with the rule (x, y) --------> (1.2x, 1.2y). Which statement is true?

Back

W'H'Y' is larger than WHY because the scale factor is greater than one.

Front

Which algebraic representation moves a figure 3 units left and 4 units up? Options: (x, y) --------> ( x + 4, y + 3), (x, y) --------> ( 3x, 4y), (x, y) --------> ( x + 3, y - 4), (x, y) --------> ( x - 3, y + 4)

Back

(x, y) --------> ( x - 3, y + 4)