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samtab
 2 years ago
Which of these is a function?
{(0, 4), (0, 5), (0, 9), (0, 23)}
{(0, 1), (1, 2), (1, 5), (2, 9)}
{(0, 4), (2, 4), (3, 7), (4, 9)}
{(6, 0), (6, 1), (6, 7), (6, 11)
please help me:(
samtab
 2 years ago
Which of these is a function? {(0, 4), (0, 5), (0, 9), (0, 23)} {(0, 1), (1, 2), (1, 5), (2, 9)} {(0, 4), (2, 4), (3, 7), (4, 9)} {(6, 0), (6, 1), (6, 7), (6, 11) please help me:(

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xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1look at the x value of each point.

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1it's consider a function if xvalue is not repeated, it's not consider a function if the xvalue is repeated. hope this helps :)

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1look at option d, the domain are repeated. since it's all 6's. look for the option that the domains are different numbers. domain=xvalue

samtab
 2 years ago
Best ResponseYou've already chosen the best response.0im sorry but i dont get it

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1you see the ( ) and the number within it right? sorry i'm bad at explaining in the ( ) you have whats called the x value and the y value

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1put it simply example (1,9) the first number 1, would be your x value, and the 9 would be your y value. hence, (x,y)

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1a (0,4) (0,5) (0,9) (0,23) you see how it is all 0's? that means domain is repeated since 0 is repeated.

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1it is not a, to answer your question. look at the first number, your x value. remember it cannot be repeated.

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1do you know, what are x values and y values？

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1you see the numbers in the parenthesis?

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1the first number would be you x value/domain let's take your question for example take your first parenthesis on a for example. you have (0,4) correct? like i mention earlier, the first number is your xvalue, which by looking at the number in the parenthesis you have 0. so your x value, which is also your domain, is 0.

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1now, you look at every single parenthesis in option a. remember that first number is always your xvalue and the definition for a function is that xvalue(domain) cannot be repeated. {(0, 4), (0, 5), (0, 9), (0, 23)} see how the domain is repeated since the first number is all 0's? which would make option a NOT a function.

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1{(0, 1), (1, 2), (1, 5), (2, 9)} looking at the option B. for option B, you have x value of : 0,1,1,2 see how 1 is repeated in this function? so therefore, B is NOT a function as well.

xxCyndi
 2 years ago
Best ResponseYou've already chosen the best response.1the correct answer would be c. {(0, 4), (2, 4), (3, 7), (4, 9)} looking at the first number of the parenthesis you would get the x value of: 0,2,3,4 you see how the number above is not repeated? that means this is the correct answer because it would represent a function.
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