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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

1 answer

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
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