How to Get Domain and Range From Coordinates

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So long as you've got coordinates you can get a domain and range in a few quick steps. Get a domain and range from coordinates with help from a high school math tutor and teacher in this free video clip.

Part of the Video Series: Math Conversions
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Video Transcript

Hi, I'm Charlie Kasov. I'm a math teacher and today you're going to learn how to get the domain and range from coordinates. Now first, let's draw a coordinate plane. We have our Y axis, and our X axis, and we'll make some coordinates. Let's do an easy one. Let's say this looks like it's about four, three. So, what you have to remember with the coordinates is coordinates are always X, Y. So, X equals the domain, and Y equals the range. So, the domain of this coordinate would be four, and the range would be three. But that's not really what a domain and range are. That would be the entire set of coordinates. So, this would have to fit into an equation, for example. So, we could say the F of X equals X minus one. And four, three would be on there because, again, we put in four. So, the F of four equals four minus one, which equals three. So, when X is four, the domain, the range is three. So, this coordinate could represent this equation, and again, the domain being X, the range being Y, or everything on this side of the equation. And I'm Charlie Kasov. You just learned how to find the domain and range from coordinates. Thanks a lot.

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