Exploring reflection across y-axis
Exploring Reflection across y-axis
Drag Snoopy who is standing on AB in QI .
1) What do you notice to Snoopy in QII?
2) What is the length of segment AB and A'B' ?
3) Find the perpendicular distance from A to y-axis and A' to y-axis? Then explain what do you notice.
4) Is this the reflection across y-axis or x-axis?
5) Can you predict a general rule in change of the coordinates in the pre-image (what will be the new coordinates of the image)