# Function Identification (Grade 10)

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## Function Identification

1.

The equation [math]y=3/4x[/math] is a function.

- True
- False

2.

Which of these equations is not a function?

- [math]y=x^2[/math]
- [math]x=3[/math]
- [math]y=4x+3[/math]
- [math]f(y)=4y^2 -2[/math]

3.

A function must pass the test.

4.

The ordered pairs

(2,3)

(3,4)

(5,2)

(3,3)

(4,1)

are part of a function.

(2,3)

(3,4)

(5,2)

(3,3)

(4,1)

are part of a function.

- True
- False

5.

[math]y=5x+2[/math] is a function.

- True
- False

6.

Jack earns $12/hr. He works 5 shifts each week that are each 8 hours long. The bus costs him $2.50 each time he goes to work. Jack's weekly earnings can be represented by a function.

- True
- False

7.

The ordered pairs

(1,2)

(2,3)

(3,2)

(4,3)

(5,2)

represent a function.

(1,2)

(2,3)

(3,2)

(4,3)

(5,2)

represent a function.

- True
- False

8.

Jack counts his steps and times himself as he walks across the football field.

This is

This is

- not a function
- a continuous function
- a discrete function
- a partial function

9.

A function showing the changing altitude of a flying airplane would be a continuous function.

- True
- False

10.

An equation which represents a bouncing ball would

- not be a function.
- be a continuous function.
- be a discrete function.
- be a partial function.

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