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Find point Q to prove that DQ¯¯¯¯¯¯¯¯
is an enlargement of DF¯¯¯¯¯¯¯¯
by a scale factor of 2 with a point D as the center of dilation.

(1 point)
Q =

1 answer

To find point \( Q \) such that \( \overline{DQ} \) is an enlargement of \( \overline{DF} \) by a scale factor of 2 with point \( D \) as the center of dilation, we first need the coordinates of points \( D \) and \( F \).

Let's assume that:

  • The coordinates of point \( D \) are \( (x_D, y_D) \)
  • The coordinates of point \( F \) are \( (x_F, y_F) \)

Given that the scale factor is 2, we can determine the coordinates of point \( Q \) using the formula for dilation:

\[ Q = D + 2( F - D ) \]

This can also be expressed as:

\[ Q = (1 - k) D + k F \]

where \( k \) is the scale factor (which is 2).

  1. Find point \( F \) given your graphical coordinate system (it looks like a grid), hence let's define \( D \) and \( F \).

  2. Calculate point \( Q \): If \( D \) has coordinates \( (x_D, y_D) \) and \( F \) has coordinates \( (x_F, y_F) \), then:

    \[ Q = (x_D + 2(x_F - x_D), y_D + 2(y_F - y_D)) \]

    This simplifies to:

    \[ Q = (2x_F - x_D, 2y_F - y_D) \]

If I could have the specific coordinates for points \( D \) and \( F \), I can substitute them into the equation above to find the exact coordinates of point \( Q \).