Find the coordinates of its image after a dilation centered at the origin with a

Mathematics
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ΔABC has coordinates of A(–5, –7), B(6, –3), and C(2, 7). Find the coordinates of its image after a dilation centered at the origin with a scale factor of 2.

A.  A(–10, –14), B(12, –6), C(4, 14)

B.  A(–10, –7), B(12, –3), C(4, 7)

C.  A(–5, –7), B(6, –3), C(2, 7)

D.  A(–2.5, –3.5), B(3, –1.5), C(1, 3.5)

Apr 30th, 2015

Multiply each of  the coordinates by 2.

A(-5, -7) ---> A'(-10, -14)

B(6, –3) ----> B'(12, -6)

C(2, 7) ---> C'(4, 14)


ANSWER:  A.    A(–10, –14), B(12, –6), C(4, 14)

Apr 30th, 2015

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Apr 30th, 2015
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