Some Important Functions

The domain of the function f(x) = 1/x is:

The range of the function f(x) = x² + 1 is:

For functions f(x) = x + 1 and g(x) = x − 1, the function (f + g)(x) equals:

The absolute value of a real number x is defined as:

Which of the following is true about the function f(x) = 1/(x − 3)?

The range of the function f(x) = √x is:

Which of the following describes the function f(x) = |x|?

If f(x) = x² − 4, then the range of f(x) is:

If f(x) = (x + 1)/(x − 1), which of the following is excluded from the domain?

For two functions f and g, the domain of f/g is:

Which of the following graphs represents the absolute value function f(x) = |x|?

Which property of absolute value is correct?

The range of f(x) = 1/(x² + 1) is:

If f(x) = |x − 2|, then f(2) equals:

Which statement about absolute value is false?