Question

What are the domain and range of f(x) = 4x – 8?

Answer 1

Answer:

Option A

Step-by-step explanation:

We have given that : $f(x)=4^x-8$

To find : domain and range of the function

Solution : The domain of the function is where the function is defined and the given function is defined for all real number

∴ domain: {x | x is a real number}

Now, the range of the function is the set of value that correspond with domain

$f(x)=4^x-8$   the range correspond to value when  y > -8

∴ range: {y | y > –8}

Therefore, Option A is correct  

domain: {x | x is a real number}; range: {y | y > –8}

   

Answer 2

The domain of f(x) = 4x - 8 is all real numbers and the range is all rean numbers.