AnswersWV-Algebra I CRIntroduction to Functions

Introduction to Functions Answers

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1
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Which represents a function?

A
Option
B
Option
C
Option
2
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The is the dependent variable.

A
$25 flat fee
B
cost
C
miles traveled
3

Which graph does not represent a function?

A
Option
B
Option
C
Option
D
Option
4

The is the independent variable.

A
$25 flat fee
B
cost
C
miles traveled
5

Leon throws a ball off a cliff. The graph represents a relation that models the ball’s height, h, in feet over time, t, in seconds.What is the domain?

A
{t| 0 ≤ t ≤ 3}
B
{t| 0 ≤ t ≤ 48}
C
{t| 0 ≤ t ≤ 64}
D
{t| all real numbers}
6

What is the domain of the relation?

A
{x| x = –4 , 0, 1, 2}.
B
{x| x = –7, –6, 2, 3, 11}.
C
{y| y = –4, 0, 1, 2}.
D
{y| y = –7, –6, 2, 3, 11}.
7

Teresa stated that the heights of the students in her class were not a function of their ages. Which reasoning could justify Teresa’s statement?

A
Two students are the same age but have different heights.
B
Two students have the same height but different ages.
C
No two students are the same age or height.

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