# 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.

Which best describes the following statement?

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

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

- It is not a function.
- It is a continuous function.
- It is a discrete function.
- It is 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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