Function Notation
Math ⇒ Functions
Function Notation starts at 9 and continues till grade 12.
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See sample questions for grade 12
Given f(x) = x - 4, what is f(0)?
Given f(x) = x² + 2x, find f(-1).
Given the function f(x) = 2x + 5, what is the value of f(x) when x = -2?
Given the function f(x) = x² - 4x + 7, find f(3).
If f(x) = 2x - 1, find the value of x for which f(x) = 7.
If f(x) = 2x + 1, what is f(0)?
If f(x) = 2x + 3 and f(a) = 11, what is the value of a?
If f(x) = 2x + 3, what is f(4)?
If f(x) = 2x and g(x) = x - 1, what is f(g(4))?
Which of the following best describes function notation?
(1) It shows the operation to be performed on x
(2) It shows the value of the function for a specific input
(3) It is a way to represent a function
(4) All of the above
Which of the following is NOT a correct function notation?
(1) f(x)
(2) y = f(x)
(3) f : x → x²
(4) f x = x²
Which of the following is the correct way to write the function that squares its input?
(1) f(x) = x²
(2) f(x) = 2x
(3) f(x) = x + 2
(4) f(x) = x/2
Which of the following represents the value of the function f at x = a?
(1) f(a)
(2) f(x)
(3) a(f)
(4) x(f)
The domain of a function f(x) is the set of all possible ________ values.
The notation f(x) is read as ________.
The range of a function is the set of all possible ________ values.
True or False: If f(x) = x², then f(-3) = 9.
True or False: In function notation, the variable inside the parentheses is always x.
True or False: The expression f(a + b) is always equal to f(a) + f(b).
True or False: The notation f(x) = y means that y is the output when x is the input.
