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Relation is between the x-values and y-values of ordered pairs. The set of all x-values is called the domain, and the set of all y-values is called the range.
All functions are relation but not all relations are functions.
The only types of relation in functions are: one to one and many to one
The vertical line test is a visual way to determine if a curve is a graph of a function or not.
Oh okay. It's all clear now. Thank you guys.
Draw a line parallel to the y-axis for any chosen value of x. If the vertical line you drew intersects the graph more than once for any value of x then the graph is not the graph of a function.
Now that I fully understand everything about functions, I'm now ready for our quiz tomorrow.
Back to reality
Okay class, let's start the quiz.
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