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Why is y=3 a polynomial function?

User Jumbo
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Answer: y=3 is a polynomial function? Yes. The equation y=3 represents the function that maps all x values to 3

Explanation:

The equation y= 3 represents a horizontal line, which will have exactly one intersection point with any vertical line. So it passes the vertical line test for a function too.

graph{y=3+0.0000001x [-10, 10, -5, 5]}

User David SK
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