Which representation of a transformation on a coordinate grid does not preserve congruence? A. (x, y) → (2x, 2y)
B. (x, y) → (x+6, y−2)
C. (x, y) → (−y, x)
D. (x, y) → (−x, y)

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

correct answer:

b.(19,-2)

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