Which of the following sets of points would give functions?

  • Thread starter cygnus_x1
  • Start date
  • #1
1
0
ok... this is the thing... i've got a math assignment due tomorrow and i need help!!! argh.. its on functions so if theres anybody who can help me, please do..

if you could, would you help me with this question:

"Which of the following sets of points would give functions? Explain your answer."
{(1,4),(2,5),(3,6),(4,7),(5,8)}

i'd really appreciate it...
thx :confused:
 

Answers and Replies

  • #2
chroot
Staff Emeritus
Science Advisor
Gold Member
10,226
34
I'm not sure I understand the question. There seems to be only one set. Further, "points" don't necessarily have anything to do with functions. I assume that the first member of the pairs is in the domain of a function, and the second member is the range -- but I'm still not sure what it means to "give a function."

Can you provide more context on how this question was presented?

- Warren
 
  • #3
HallsofIvy
Science Advisor
Homework Helper
41,833
961
A list of (x,y) pairs certainly can give a function. In a sense it is y= f(x) where x must be one of the first numbers in the pairs and y is the second number in that same pair. A "function" specifically has the property that you do not have the same "x" (first number) with two different "y"s (second number). That is, you cannot have, for example, (3, 7) and (3, 5) in the same "function". Since, in the example given, the first numbers are 1, 2, 3, 4, 5 with no repeats, it IS a function.
 

Related Threads on Which of the following sets of points would give functions?

  • Last Post
Replies
2
Views
1K
Replies
1
Views
1K
Replies
12
Views
2K
Replies
8
Views
2K
Replies
12
Views
8K
Replies
3
Views
1K
Replies
8
Views
9K
Replies
16
Views
2K
Replies
5
Views
5K
Top