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3. Which of the following are isometries (rigid motions)? (Choose all that apply) (2 points)
a) G (x,y) -----> (x - 2, y - 2)
b) H (x,y) -----> (-y, x)
c) H (x,y) -----> (x , 4y)
d) D (x,y) ---> (3x, 3y)
e) D (x,y) ---> (x + 42, y + 12)

Respuesta :

Answer:

The answer is D.

Explanation:

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Isometries means both x and y will change with same scale factor not dissimilar factors

#1

Factor is -2

  • Isometries

#b

  • No it's (-1,1)

#c

  • No it's (1,4)

#d

Factor is 3

  • Yes

#e

No

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