Question

find domain of function f(x) =1/3x-12.
express using interval notation

Answer 1

a: 1/(3x -12) or
b: (1/3x) -12?

Answer 2

either way the domain is every x value for which this function would return a real number.

the only value of x for which this function wouldn't be true is when the denominator = 0.

Answer 3

a

Answer 4

how do you do that

Answer 5

the domain is all real numbers ecept 4 (when the denomiator = 0)

Answer 6

i do it mentally, i think its the only way

Answer 7

so how do u write that in interval notation

Answer 8

You can write it as (-infinity, 4) U (4, +infinity)