Algebra Unit 2 Test

Determine if the relation represented in the diagram is a function. Justify your response. If the relation is a function, state its domain and range.

• The relation is a function because it passes the horizontal line test.

• The relation is not a function because it does not pass the vertical line test.

• The relation is a function because it passes the vertical line test.

• The relation is not a function because it passes the horizontal line test.

Determine if the relation represented in the diagram is a function. Justify your response. If the relation is a function, state its domain and range.

• The relation is a function because it passes the horizontal line test.

• The relation is not a function because it does not pass the vertical line test.

• The relation is a function because it passes the vertical line test.

• The relation is not a function because it passes the horizontal line test.

Determine if the relation represented in the table is a function.

• Yes, it is a function.

• No, it is not a function.

Determine if the situation is functional or not: A science student created a bacterial culture of a swab from her toilet bowl handle using a petri dish. She recorded the amount of bacteria in the petri dish once each day for 5 days. Is the amount of bacteria in the petri dish a function of the amount of time it cultures in the petri dish in this situation?

• Yes, it is a function

• No, it is not a function

Determine if the situation is functional or not: Data was collected from high school students on the number of extracurricular activities each student participated in during the school year and the students’ overall GPAs. Is overall GPA a function of the amount of extracurricular participation in this situation?

• Yes, overall GPA is a function of extracurricular participation.

• No, overall GPA is not a function of extracurricular participation.

• 43

• 0

• -43

• 50

• -13

• 7

• 0

• 13

• 64

• 32

• 48

• 16

The graph of f(x) is shown. Find the value of f(-3).

• 0

• 1

• -1

• 2

If -12 is an element in the domain of f(x) = 6(8 - x), what is its corresponding element in the range?

• 120

• 96

• 72

• 48