Open ended math question?

Question

OPEN ENDED:Give an example of a relation. identify the domain and range.

Answer 1

Ok! That kind of question gave me hard time sometime earlier in my life.

Let's say that f(x)=x^2 or y=x^2 (x to the power 2) The domain would be the entire set of real numbers. that is x can take any real value. e.g. -4, -3, 0, 2, 9999, 0.0045 etc.!

However, this is not the case with the range, which are the possible values for y or f(x). In this case the range will be the positive real numbers and "0". because for whatever value of x (in the domain) you will always get a positive value for y (the range)

If x = -5 you will get 25 for y (always positive or zero)

Thank you for allowing me the opportunity to help! and I hope that I was of real help for you, please don't hesitate to contact me at anytime for more information!

Note on "TheTechKi..."'s answer! for the function y=1/x. The range doesn't include zero. If you get the limit for y=1/x when x tends to infinity (or -infinity) then the limit (not the functions) would = zero (or we can say that y tends to zero when x tends to infinity (+or-))

However it is too true for this function the domain is the real number set disincluding zero. You can't devide by zero, can you!!!

Answer 2

A relationship is basically a math function as 'x' increases what does 'y' do?

for instance lets say f(x) = 1/x
the relationship here is: y is the inverse of each x
and the domain is (-infinity,+infinity) x does not equal 0
the range is all real numbers

Answer 3

shop P an identical $ten thousand. then you actually understand t is 5, so do the precedence two times, once with all cost (say 5% (0.05)) then again with double that, 10% (0.10) be particular to subtract the starting up $10,000 at the same time as done earlier checking to work out if it doubled.