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Question

Find point Q to prove that DQ¯¯¯¯¯¯¯¯
is an enlargement of D (3,2) F (8,4)¯¯¯¯¯¯¯¯
by a scale factor of 2 with a point D as the center of dilation.

(1 point)
Q (
,
)
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1 answer

To find point Q that proves \( DQ \) is an enlargement of triangle \( D(3,2) \) and \( F(8,4) \) by a scale factor of 2 with point D as the center of dilation, we can use the formula for dilation.

The formula for dilation from point \( D \) with scale factor \( k \) is given by:

\[ Q = D + k(F - D) \]

where \( D \) is the center of dilation, \( F \) is the original point, and \( k \) is the scale factor.

In this case, we have:

  • \( D = (3, 2) \)
  • \( F = (8, 4) \)
  • \( k = 2 \)

Now we can find \( Q \) using the formula:

  1. Calculate \( F - D \): \[ F - D = (8 - 3, 4 - 2) = (5, 2) \]

  2. Scale \( F - D \) by the scale factor \( k = 2 \): \[ k(F - D) = 2(5, 2) = (10, 4) \]

  3. Add this result to point \( D \): \[ Q = D + k(F - D) = (3, 2) + (10, 4) = (3 + 10, 2 + 4) = (13, 6) \]

Therefore, point \( Q \) is:

\[ Q(13, 6) \]

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