Complete the equations identifying both lines of reflection that will flip the given figure onto itself.

Coordinates are A(3,-4) B(3,5) C(5,-2) D(-4,-2)
(1 point) The lines of reflection are x= and y= .

1 answer

To identify the lines of reflection that will flip the figure formed by the points A(3,-4), B(3,5), C(5,-2), and D(-4,-2) onto itself, we can analyze the coordinates of the points.

  1. Finding the lines of reflection:

    • Vertical Line of Reflection:

      The x-coordinates of points A and B are both 3, which indicates symmetry about a vertical line. The coordinates of points C and D suggest they reflect over a vertical line at x = 0, as point D's x-coordinate is -4 and point C's x-coordinate is 5.

      To find the x-coordinate of the vertical line of reflection, we can average the x-values of points that are pairs. Upon observing the x-coordinates:

      • Reflecting A(3, -4) and B(3, 5) would have their mid-point between them at x = 3.
      • Reflecting C(5, -2) and D(-4, -2) would have their mid-point found by averaging both x-coordinates: (5 + (-4))/2 = 0.5.

      Observing symmetry, the best line of reflection here is a vertical line passing through the x = 0. Hence:

      \( x = 0 \).

    • Horizontal Line of Reflection:

      To find a horizontal line, we look at the y-coordinates. The y-coordinates of points A and D are at -4 and -2 respectively; similarly for points B and C. The points will have a mid-line reflecting around their averages.

      Looking closely:

      • A(3, -4) and C(5, -2) can be averaged; (-4 + (-2))/2 = -3.
      • C(5, -2) and D(-4, -2) average at -2 (as both share the same y-coordinate which contributes to the same horizontal reflection).

    Thus, the average between point A and point B provides a y flip hence the interesting part to conclude here is noting this y-value positions for reflection.

    The horizontal reflection can then be confirmed on y = 1/2.

  2. Finalizing the reflection lines:

Putting these together, the lines of reflection for this figure are:

  • \( x = 0 \) (vertical line of reflection)
  • \( y = 1/2 \) (horizontal line of reflection)

So your final answer would be: The lines of reflection are \( x = 0 \) and \( y = 1/2 \).