Functions Real World

A relation where every input in matches with exactly one output is called what?

• Relation

• Linear

• Exponential

• Function

Is relation shown a function?

• YES

• NO

Which of the graphs shows that one of runners started 10 yards further ahead of the other? 

• Graph A

• Graph B

• Graph C

• Graph D

• F
• H
• G
• I

The function f(x)=1.75x+2 models the total cost to purchase an ice cream sundae with x amount of toppings. Austin only has $8 to spend on his ice cream sundae. What is the most appropriate domain for this situation?

• x ≤ 8

• 0 ≤ x ≤ 8

• x ≤ 4

• 0 ≤ x ≤ 4

• A
• B
• C
• D

• F
• G
• H
• J

Is the relation a function?

• YES

• NO

What is the domain of the function?

• (3, ∞)

• [-3, ∞)

• (-∞, 4]

• (-∞, 4)

At what rate did the rain fall?

• 2 cm per hour

• ¹/₄ cm per hour

• ¹/₂ cm per hour

• 4 cm per hour