Back to Understand that a function is a rule that assigns to each input exactly one output — Problem 2 · Task Set 14

Exercises: Understand That a Function Assigns Each Input Exactly One Output

Work through each section in order. For each relationship, decide whether it is a function and be ready to explain using the definition: a function assigns to each input exactly one output.

Grade 8·20 problems·~30 min·Common Core Math - Grade 8·container·8-f-a-1

Work through problems with immediate feedback

Fluency Practice

Decide whether each relationship is a function.

Is the set of ordered pairs $\{(1, 7), (2, 7), (3, 7), (4, 7)\}$ a function?

Function -- each input has exactly one output, even though the outputs are equal.

Not a function -- the output 7 is repeated for several inputs.