Understand that a function from one set (called the domain) to another set (called the range) assigns to each element of the domain exactly one element of the range. If f is a function and x is an element of its domain then f(x) denotes the output of f corresponding to the input x.

Sample Practice Questions (3)

The graph of a function is shown below. What is the domain of this function?

{- 3, - 2, 0, 1, 3}

{- 4, - 2, 0, 2, 4}

CAll real numbers

{- 4 \leq x \leq 4}

The graph of a function is shown below. What is the range of this function?

{- 3, - 2, 0, 1, 3}

{- 4, - 2, 0, 2, 4}

CAll real numbers

{- 3 \leq y \leq 3}

Which of the following graphs does NOT represent a function?

AA horizontal line

y = 3

BA vertical line

x = 2

CA line with a slope of 1

DA parabola opening upward

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