Relations and Functions

Question 1

The graph above: ✔ one-to-one functionfunction (but not one-to-one) relation (but not a function)

Revolt · Accepted Answer

✔ one-to-one function

Question 2

What is the dependent (output) variable?n, the number of necklaces$6, the shipping cost✔ c, the total cost (in dollars)

Revolt · Accepted Answer

✔ c, the total cost (in dollars)

Question 3

Range: {–1}✔ {–1, 2, 4, 5}{–3, –1, 1}{–3, –1, 1, 2, 4, 5}

Revolt · Accepted Answer

✔ {–1, 2, 4, 5}

Question 4

✔ functionnot a function

Revolt · Accepted Answer

✔ function

Question 5

What is the domain? n>=0✔ n=0, 1, 2, 3,...all real numbers

Revolt · Accepted Answer

✔ n=0, 1, 2, 3,...

Question 6

Explain why your relation is a function.

Revolt · Accepted Answer

My relation is a function because each student is paired with only one age. No student appears with two different ages, so every domain element matches exactly one range element.

Question 7

Question 27

Revolt · Accepted Answer

{–2, –1, 0, 4}; {–2, 2, 3, 4}

Question 8

Domain: {–2, –1, 0, 2, 3, 4}✔ {–2, –1, 0, 4}{–2, 2, 3, 4}

Revolt · Accepted Answer

✔ {–2, –1, 0, 4}; {–2, –1, 0, 4}; {–2, 2, 3, 4}

Question 9

The table above: function✔ not a function

Revolt · Accepted Answer

✔ not a function

Question 10

Which equation expresses the order’s total cost, c, as a function of the number of necklaces, n?n(c)=7c + 6n(c)=7c - 6✔ c(n)=7n + 6c(n)=7n - 6

Revolt · Accepted Answer

✔ c(n)=7n + 6

Relations and Functions Answers

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