Describe the single transformation equivalent to reflection in the line y = x followed by reflection in the line x = 4.
The answer book states:
Rotation 90* anticlockwise about (4,4)
Could someone show me the right direction in approaching this question?
KS3 Transformations Watch
- Thread Starter
- 15-11-2008 19:58
- 15-11-2008 20:03
draw a graph of y=x and draw the line
take a point e.g. (1,2)
reflect it thru y=x which will give you point two (2,1)
Draw the line x = 4
Reflect point 1 in x=4, which should become (7,2)
draw a line from point (7,2) to (4,4)
measure 90 degrees c.w
this gives you the same point as point (2,1)