Which algebraic representation of a transformation on a coordinate grid does NOT preserve congruence? A (x, y) → (x + 6, 7y+ 6)
B (x, y) + (-x, y)
C (x, y) → (6x, 6y)
D (x, y) + (-y, x)

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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