Tuesday, January 5, 2010

Jan.05/09

In class today we didn't do mental math but we did take some notes. We learned about funtions.
A function is a relation that passes the vertical line test.
A relation is any set of ordered pairs.
A vertical line test- " if the vertical line can be drawn such that at maximum it only ever intersects a single point in the graph of relation, then the relation must be a function."

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