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Grade 11

Identifying one-to-one functions

Interactive practice questions

Consider the following.

a

Select all the correct options that complete the following statement.

A one-to-one function is a function in which:

No ordered pairs have the same $y$y coordinate.

A

For every value of $y$y, there is only one value of $x$x.

B

The axis of symmetry is the $y$y-axis.

C

A horizontal line intersects the graph in no more than one place.

D
b

Does the graph of a horizontal line represent a function?

Yes

A

No

B
c

Is a horizontal line a one-to-one function?

No, as it does not pass the vertical line test.

A

Yes, as it passes the horizontal line test.

B

No, as it does not pass the horizontal line test.

C

Yes, as it passes the vertical line test.

D
Easy
1min

Is the following a graph of a one-to-one function?

Easy
< 1min

Is the following a graph of a one-to-one function?

Easy
< 1min

Is the following a graph of a one-to-one function?

Easy
< 1min
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Outcomes

11U.A.1.1

Explain the meaning of the term function, and distinguish a function from a relation that is not a function, through investigation of linear and quadratic relations using a variety of representations and strategies

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