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anonymous
 one year ago
Which relation is a function?
http://static.k12.com/calms_media/media/1417000_1417500/1417250/1/5777f7f0552e79387010b19944ad5ad6382e1309/MS_PA_130905_170056.jpg
http://static.k12.com/calms_media/media/1417000_1417500/1417251/1/6b2bdac1e2fa3c7b9c55470a43d119d61df2b5e9/MS_PA_130905_170057.jpg
http://static.k12.com/calms_media/media/1417000_1417500/1417252/1/89867371590aef555fd347857ff82efabb475a92/MS_PA_130905_170058.jpg
http://static.k12.com/calms_media/media/1417000_1417500/1417253/1/b34d9ef463e10ac51765581222931bb6f3b55e01/MS_PA_130905_170059.jpg
anonymous
 one year ago
Which relation is a function? http://static.k12.com/calms_media/media/1417000_1417500/1417250/1/5777f7f0552e79387010b19944ad5ad6382e1309/MS_PA_130905_170056.jpg http://static.k12.com/calms_media/media/1417000_1417500/1417251/1/6b2bdac1e2fa3c7b9c55470a43d119d61df2b5e9/MS_PA_130905_170057.jpg http://static.k12.com/calms_media/media/1417000_1417500/1417252/1/89867371590aef555fd347857ff82efabb475a92/MS_PA_130905_170058.jpg http://static.k12.com/calms_media/media/1417000_1417500/1417253/1/b34d9ef463e10ac51765581222931bb6f3b55e01/MS_PA_130905_170059.jpg

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Its A B C D going down from top to bottom. Sorry i couldnt figure and other way to get the pic's

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1So Swordsman, same reasoning as with your last question. Pick any value x. If it has two values for y, then it isn't function (because you can't give me a definite answer of what f(x) is at that point). If all values of x have unique y values, then it's a function.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I understand That.. its just i dont understand the way the charts are set up. how do i know what the X values are?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1So see the line? Pick any part of the line, a point in it. Find the x and y coordinate of that point. That is the (x,y) coordinate there. You cannot have two points on that line with the same x coordinate. Eg (0, 3) and (0,2). If you can find any two points like that, it isn't a function.

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1Looking at picture B. See when x = 0? What are the y values there?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1Yep, very good. So would that be a function?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no.. Becuase it cant be the same number value?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1Exactly, well done! You can't have two identical x values. Now let's look at the first picture A. Can you see if that's a function or not?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so i can say c is wrong too?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1That's right, good work.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so its a or d.. on d its just dots.. so does that mean i can cut out d.. and the answer would be a>?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1Nope. For d there are only four unique points as you can see. But for part a, there are an infinite number of points (you can imagine how many dots there are joined together to make that line).

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1d can still be a function, but to prove it's not, you need to find an example where two x values are the same, can you think of any?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.12 only has one unique y value (5), so that wouldn't proof it isn't a function. But you're right about 4, since that has two y values (both 1 and 5). So you've shown it isn't a function, well done.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh.. on A its the same  and + number so on A B and C it cant be the function.. so that leaves D as the answer! Right?

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.1D isn't a function. But A is. Because in A, you can pick any value x, and there is only one unique value of y. Try it and see if you can find where that isn't true. You shouldn't find anywhere.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0*Face Palm* oh noes.. im so blonde!!! THANKS FOR THE HELP!! :D
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