# Math Help - domain and range

1. ## domain and range

were investigating a function y = 1 over x - 6 . How do i find the RAnge and the Domain?? i forgett...

2. Originally Posted by MizzLeggs
were investigating a function y = 1 over x - 6 . How do i find the RAnge and the Domain?? i forgett...
the domain is the set of x-values for which the function is defined. the range is the set of y-values we can hit when plugging in any of these x-values. start by finding what x's cannot work, then say the domain is all x's but those. as for the range, knowing what the graph looks like (which you should) should help you

does that help?

3. Originally Posted by MizzLeggs
were investigating a function y = 1 over x - 6 . How do i find the RAnge and the Domain?? i forgett...
Is that

$\frac{1}{x-6}$

or

$\frac{1}{x} - 6$?

4. ## Plz help me in finding the domain ?

Plz help me in finding the domain ? If f(x) is defined over [0,1] , then what is the domain for the function f(2x+3)

5. Originally Posted by kus_ks
Plz help me in finding the domain ? If f(x) is defined over [0,1] , then what is the domain for the function f(2x+3)
2x + 3 = 0 => x = -3/2.
2x + 3 = 1 => x = -1.

So the domain of f(2x+3) is [-3/2, -1].

By the way, questions unrelated to the original question should be posted in a new thread.