I need help please i will give medal! Find the domain of the function.

f(x) = -2x + 4
A. (-∞, 0) (0, ∞)
B. (-∞, ∞)
C. [-4, ∞)
D. (0, ∞)

Question

I need help please i will give medal! Find the domain of the function. 

f(x) = -2x + 4
  A. (-∞, 0) (0, ∞) 	
  B. (-∞, ∞) 	
  C. [-4, ∞) 	
  D. (0, ∞)

anonymous · Answer

@ShailKumar please help

anonymous · Answer

@amistre64 @abb0t

anonymous · Answer

thank you can you guys help with more

amistre64 · Answer

one way to find the domain is to see if the function has an inverse;  if it does, the range of the inverse is the domain.

amistre64 · Answer

the more logical method is to simply assume its all real numbers and then pull out any values that make for bad mathing.

anonymous · Answer

Thank you @amistre64