A line containing the points (- 2, 3) and (2, 3) is reflected across the z-axis. How long is the reflected line? (1 point)
04 units
3 units
not enough information
infinitely long
When a line is reflected across the z-axis, the x-coordinate of each point is multiplied by -1, while the y-coordinate remains the same.
The original line contains the points (-2,3) and (2,3).
After reflecting across the z-axis, these points become (2,3) and (-2,3).
The distance between these two points is 4 units.
Therefore, the length of the reflected line is 4 units.
The correct answer is:
4 units