Which value of x must be excluded from the domain of the fun

Which value of x must be excluded from the domain of the function, y=3/5(x-4)?

Solution

Function y = 3/5(x-4)

so set the denominator = 0

(x-4) = 0

x = 4

so our domain is

x / x belongs R (x) not equal to (4)

x is a set of all real no except (4)

x is the set of all real numbers except 4