Question

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?

Answer 1

The line n must be reflected across x-axis so that the resulting line is parallel to the image of line m.

Explanation of how reflection across axis works?

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;

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