Reflecting about the xAxis
Here, the Mona Lisa is reflected about the xAxis. Drag points B, C, and the pre-image picture around and observe how her reflection changes.
In the app above, move Lisa around to get different preimage points. Then, record their images in the image column.
Take a look at the table of data above. Notice any patterns? If so, describe!
Suppose a point (a, b) is reflected about the xAxis. What would the coordinates of its image be? Express in terms of a and b.