Reflecting about Y = X and Y = -X (Ver 1)
- Author:
- Tim Brzezinski
- Topic:
- Coordinates, Geometry, Straight Lines, Reflection
Here, we are REFLECTING Lisa's pic ABOUT A LINE. Now reposition the line so it coincides (lies on top of) the line Y = X.
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. Suppose a point (a, b) is reflected about the line y = x. What would the coordinates of its image be? Express in terms of a and b.
Now reposition the line so it coincides (lies on top of) the line Y = -X.
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. Suppose a point (a, b) is reflected about the line y = -x. What would the coordinates of its image be? Express in terms of a and b.