what is the domain of y=3\x-9

Question

need help 

Answer 1

y= 3/(x-9)

 

The domain is all possible input values of x.

The only restriction here is not dividing by

zero.  x is all real numbers except 9.

d = {x|x∈R; x≠9}

or, in interval notation,

(-∞, 9) U (9, ∞)

Answer 2

what is the domain of y=3\x-9

 

The domain of this fraction is in he denominator where x-9 should not equal 0. The domain is therefore all real numbers excluding 9 because x-9 =0, x=9 The domain can be written as [-∞,9) and (9,+∞]