Question

part a
complete the statement
the relationship between the maximum descent angle and maximum speed of the roller coasters
part b
which choice represents the domain of this relationship?
○ {80, 90, 91, 95, 128}
○ {80, 81, 85, 90, 91, 93, 95, 100, 120, 128}
○ {81, 85, 90, 93, 100, 120}
○ {90, 128, 93, 80, 100, 90, 81, 95, 85, 91, 120, 90}

Explanation:

Step1: Define function criteria

A function requires each input (domain value) to map to exactly one output (range value).

Step2: Check Part A data

Look at maximum descent angles (second column): 90 maps to 128 and 90; 100 maps to 90, 120 maps to 90. One input has multiple outputs.

Step3: Identify domain for Part B

Domain is the set of all unique input values (maximum descent angles): {81, 85, 90, 93, 100, 120}.

Answer:

Part A:

is not

Part B:

$\{81, 85, 90, 93, 100, 120\}$