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February 28, 2015

February 28, 2015

Posted by **Kwena** on Sunday, March 11, 2012 at 10:10am.

- math -
**MathMate**, Sunday, March 11, 2012 at 10:42amYou probably have a graph of the three relations/functions in front of you, but we do not see it.

However, if f(x), g(x), and h(x) are functions, then the following statements are true:

1. Any defined function can intersect the x-axis any number of times, depending on the definition of the function. For example, the sine function cuts the x-axis infinite number of times.

2. By the definition of a function, any vertical line through any point on the domain of the function can intersect the function at exactly one point.

That is why the all the functions cut the y-axis at (at most) one point.

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