Question

sebastian uses a gift card to buy gaming apps. the table shows that the input is the number of games that are $2 each. the output is the amount left on the card. how can you tell if the table shows a function? check if each? has exactly one?. number of games: 0, 1, 2, 3; money on card ($): 25, 23, 21, 19

Explanation:

Step1: Recall Function Definition

A function is a relation where each input (domain value) has exactly one output (range value). Here, the input is "Number of Games" (domain), output is "Money on Card" (range).

Step2: Apply to Table

Check each input (number of games: 0,1,2,3) has exactly one output (money on card: 25,23,21,19). Each input has one unique output.

Answer:

To tell if the table shows a function, check if each input (number of games) has exactly one output (money on card).