Question

F = {(x, y ) | x + y = 10}

Can we call this relation a Function ?

Answer 1

yes, it is affine.

Answer 2

y=10-x is a function...

Answer 3

they are not independent
if x =2
then y MUST = 8

Answer 4

but how can you call it a function
there is no domain and range for it

Answer 5

well, we are im sure talking about the reals...

Answer 6

if it is mentioned to be real numbered set then it is a function

Answer 7

if someone asks
is y=2x a function?
the answer is yes
we assume they are talking about reals...

Answer 8

thats in set notation, ive selected Function... but not sure so waiting to submit..

Answer 9

ok ok

Answer 10

the question should say
\[\{(x, y ) \in R^2| x + y = 10\}\]

Answer 11

where R^2 is R cross R

Answer 12

guess real numbered set is implicit here... so no problem wid function definition it seems :) thanks a lot zz an dgiligails :))