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!
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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.
Font sizeFont size
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Bold [ctrl+b]
Italic [ctrl+i]
Underline [ctrl+u]
Strike
Superscript
Subscript
Font color
Auto
Justify
Align left
Align right
Align center
• Unordered list
1. Ordered list
Link [ctrl+shift+2]
Quote [ctrl+shift+3]
[code]Code [ctrl+shift+4]
Insert table
Remove Format
Insert image [ctrl+shift+1]
Insert icons of GeoGebra tools
[bbcode]
Text tools
Insert Math
Close
– Tim Brzezinski

Information: Reflecting about the yAxis