Quiz no. 1 Relations and Functions

Quiz by Arvin Gara

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- Q1
In mathematics, what is a function?

A sequence of numbers

A variable with no defined value

A mathematical operation

A set of ordered pairs

60s - Q2
Which of the following is NOT a way to represent a function?

Percentage

Table

Equation

Graph

60s - Q3
If f(x) = 2x - 1, what is the value of f(3)?

5

7

4

6

60s - Q4
Which relation is NOT a function?

{(3,-2), (5,-6), (7,7), (8,8)}

{(1,-5), (3,1), (-5,4), (4,-2)}

{(1,-5), (-1,6), (1,5), (6,-3)}

{(2,7), (3,7), (4,7), (5,8)}

30s - Q5
All of the x values or inputs are called what?

Relation

Range

Domain

Function

60s - Q6
All of the y values or outputs are called what?

Domain

Relation

Range

Function

60s - Q7
What is the range of the relation shown on the mapping diagram?

R:{3, 5, 8}

R:{3, 5, 8, 12}

R:{all real numbers}

R:{-7, 11}

60s - Q8
What domain value corresponds to the range value -2 in the given relation?

{(-1,2), (-2,4), (2,5), (0,-2), (2,0)}

-2

0

4

2

60s - Q9
A function that assigns each input to exactly one output is called:

None of the above

One-to-one function

Onto function

Many-to-one function

60s - Q10
Is the relation a function? Why.

Yes, because the x-value 11 has two y-values pair with it.

No, because each x-value has only one y-value paired with it.

No, because the x-value 11 has two y-values paired with it.

Yes, because each x-value has only one y-value paired with it.

60s - Q11
Is this mapping a function or not a function?

Function

Not a Function

60s - Q12
Is this mapping a function or not a function?

Function

Not a Function

60s - Q13
Determine if the following relation describes a function.

Not a Function

Function

60s - Q14
Determine if the following relation represents a function.

Not a Function

Function

60s - Q15
Is this graph a function or not a function?

Function

Not a Function

60s