Reflecting about the yAxis
Now reposition the line so it coincides (lies on top of) the Y-AXIS.
In the app above, move Lisa around to get different primage points. Then, record their images in the image column.
Take a look at the table of data above. Notice any patterns? If so, describe!
Take a look at the table of data above. Suppose a point (a, b) is reflected about the yAxis. What would the coordinates of its image be? Express in terms of a and b.