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By completing the table that shows the cost π¦ of buying π₯ movie tickets, state the domain and range.
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Before we find the domain and range, letβs complete the table.
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So π₯ represents the number of people and π¦ represents the cost of movie tickets in dollars.
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So looking at this first column, what does it mean?
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Since π₯ is equal to one, that means one person.
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And π¦ represents that cost of the movie ticket.
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So that means that one person cost 11 dollars.
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So if one ticket cost 11 dollars, what if there is two people?
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That would be 11 dollars plus 11 dollars.
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So we would fill in 22 for that column.
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So for three people, we could add 11 to itself three times or take 11 times three and get 33 dollars.
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And lastly, for four people, that would be 11 added to itself four times or 11 times four to get 44 dollars.
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So now, for domain and range, the domain is represented by the π₯-values β the numbers that we would plug in.
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The range would be the π¦-values β the numbers that you would get from plugging in a number, the output, the answers.
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This means the domain will be the number of people π₯ and the range will be the cost of movie tickets in dollars π¦.
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So our final answer will be that the domain is equal to one, two, three, four.
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And the range is equal to 11, 22, 33, and 44.