1.2.1 Relations and Functions - Practice
1. Identify the domain and range for the relation. {(4, 3), (7, 6), (10, 9), (13, 6), (16, 9)}
2. Identify the relation that is a function. ○ day of the week to the date ○ income to color of their car ○ shoe size to a person’s name ○ professional golfers to their rankings 4. Use the vertical-line test to determine whether the relation is a function. If not, identify two points a vertical line would pass through.
3. Identify the relation that is not a function. ○ time of day to the temperature at that time ○ weight of an apple to the apple’s cost ○ number of days to the height of a tree ○ weight of a person to a person’s height
5. Use the vertical line test to determine whether the relation is a function. If not, identify two points a vertical line would pass through.
6. Give the domain and range of the relation. Indicate whether the relation is a function. x y 5 − 3 6 − 2
6 0 7 4
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