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Is f/x )= 3x² a function?

1 Answer

4 votes

Answer:

yes.

Explanation:

The definition of a function: "A function is defined as a relation between a set of inputs having one output each."

This means each x can only have 1 y value. You can check if this is a function using the vertical line test. To do the vertical line test draw vertical lines through the graph of the expression. If you even hit 2 points with a vertical line it is NOT as function.

The graph is of an upward facing parabola so it will be a function. We can graph and check this with the VLT which it passes.

Is f/x )= 3x² a function?-example-1
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