What are the coordinates of Point Q after it is reflected across the line x = -2?

Q (-4, 3) -> Q' ( , )

1 answer

To find the coordinates of Point Q after it is reflected across the line \( x = -2 \), we need to apply the reflection formula.

The line \( x = -2 \) is a vertical line where every point on the line has an x-coordinate of -2. To reflect a point across this line, we will follow these steps:

  1. Determine the horizontal distance between the original point and the line of reflection.
  2. Place the reflected point on the opposite side of the line at the same distance.

For point \( Q (-4, 3) \):

  1. The x-coordinate of point Q is -4.

  2. The x-coordinate of the line \( x = -2 \) is -2.

  3. The distance from point Q to the line is: \[ -4 - (-2) = -4 + 2 = -2 \] This means point Q is 2 units to the left of the line.

  4. To find the x-coordinate of the reflected point \( Q' \), we move 2 units to the right of the line \( x = -2 \): \[ -2 + 2 = 0 \]

So the x-coordinate of \( Q' \) is 0. The y-coordinate remains the same since the reflection is horizontal.

Thus, the coordinates of the reflected point \( Q' \) are: \[ Q' (0, 3) \]

Therefore, the final answer is: \[ Q' (0, 3) \]