Wednesday, 2 July 2014

Discusion: HW8E Question 4

In the following question, one important consideration is the "mirror" line.
Where do you think the mirror lines going to be? How many mirror lines are there altogether.

Strategy: Sketch the graph on the paper and figure out.



This is one possibility: when the mirror line is the y-axis.
Can you tell the equation of the "reflection"?




This is one possibility: when the mirror line is the x-axis.
Can you tell the equation of the "reflection"?








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