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Remark 4 Determining whether a relation is a function is pretty straight forward ... Definition We say an equation defines y as a function of x if each x-value.

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In the relation , y is a function of x , because for each input x (1, 2, 3, or 0), there is only one output y . x is not ... The Line Test for Mapping Diagrams. To check if a relation is a function, given a mapping diagram of the relation, use the following ...

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Sal determines if y is a function of x from looking at an equation.

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If the graph passes a vertical line test, then y can be a function of x. Here's a reference (also contains a list of more solid references in case you need a more ...

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defines y as a function of x, because for every x value there is no more than a y ... a function if some values of x do not have a y, but if there is more than one y for ...

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You can put this solution on YOUR website! y² = 7x It is not a function because, for instance, (7,7) and (7,-7) are both solutions, since: (7)² = 7(7) 49 = 49 But also ...

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Determining whether an equation represents y as a function of x by Tina Deemer - July 20, 2012.

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9. Example 1 – Testing for Functions. Determine whether the relation represents y as a function of x. a. The input value x is the number of representatives from.

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y = f(x). Functions can be represented by tables, symbols, or graphs. Each of these ... To determine if y is a function of x, it is convenient to solve for y as,.