If line m is rotating 90° about the origin, what must be done to line n so that the resulting line is parallel to the image of line m?

The line n must be reflected across x-axis so that the resulting line is parallel to the image of line m.
When a graph is reflected along an axis, say x axis, then that leads the graph to go just in the opposite side of the axis as if we're seeing it in a mirror.
If line m is rotating 90° about the origin,
Then the resulting line lies in the first quadrant and the third quadrant.
So, line n must be reflected across x-axis so that the resulting line is parallel to the image of line m.
Learn more about reflection;
https://brainly.com/question/27813231
#SPJ1