Identifying Domain and Range of Ovals with Given Points

[dakiller]

Homework Statement

There are two vertical ovals, one containing the x-coordinate values and one containing the y-coordinate values. The x-axis values: -1, 8, 0 and the y-axis values: -4, 0, -1

(-1,-4) (8,0) and (0,-1) are the three points.

Homework Equations

I'm not sure this is an equation nor did I see any of these in Algebra II

The Attempt at a Solution

So in my mind I can't decide would I list this like an inequality with:

Domain- -1≤x≤8
Range -1≤y≤8

or would I make it like it is just three points so that?

Domain= {-1,0,8}
Range= {-4,-1,0}

Thank you so much for any assistance in advance!

 

[thelema418]

Can you take a picture and post it?

Based on your description, I think the set notation is better.

Also, are there arrows showing a mapping of X to the values Y? Usually when I say range, I mean the image of the function.

 

[LCKurtz]

Homework Statement

There are two vertical ovals, one containing the x-coordinate values and one containing the y-coordinate values. The x-axis values: -1, 8, 0 and the y-axis values: -4, 0, -1

(-1,8) (8,0) and (0,-1) are the three points.

That is an incomprehensible statement of the problem. Please give the exact wording from your text.

 

[dakiller]

Its like this except with the values I gave.

 

[LCKurtz]

Domain= {-1,0,8}
Range= {-4,-1,0}

Thank you so much for any assistance in advance!

Its like this except with the values I gave.

Your domain that I copied above is correct. I don't see what this has to do with ovals though.

 

[HallsofIvy]

In that case your answers, Domain -1≤x≤8 and Range -1≤y≤8, are wrong because they imply that x could be a real number between -1 and 8, for example x= 1.25. The domain is simply the set {-1, 0, 8} and the range is the set {-4, -1, 0}. Yes, it really is that easy!