Unit #2 Review

What is the range for the function?

Answer explanation

What is the range for the function?

Answer explanation

• {4, 24, 44, 64, 84, 104, 124}

• {0, 1, 2, 3, 4, 5, 6}

• {0, 2, 4, 6}

Answer explanation

Remember - identify the dependent f(x) and the independent x.

Domain or Range?

Discrete or Continuous?

Sketch a graph?

• {8, 9, 10, 11, 12}

• {285.85, 320.80, 355.75, 390.70, 425.65}

Answer explanation

Remember - identify the dependent f(x) and the independent x.

Domain or Range?

Discrete or Continuous?

Sketch a graph?

Which graph represents y as a function of x?

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Answer explanation

Use the Vertical Line Test!

1 intersection/point per vertical line = Function

2 or more = Not a Function

Which graph does NOT show y as a function of x?

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Answer explanation

Use the Vertical Line Test!

1 intersection/point per vertical line = Function

2 or more = Not a Function

The graph shows part of a linear function on the coordinate grid.

What are the domain and range of the line segment? Select TWO Correct Answers.

• Domain: All real numbers

• Domain: All real numbers greater than -9 and less than 2

• Domain: All real numbers greater than -9 and less than or equal to 2

• Range: All real numbers greater than -9 and less than 2

• Range: All real numbers greater than or equal to -6 and less than 3

The graph shows part of a linear function on the coordinate grid.

What are the domain and range of the line segment? Select TWO Correct Answers.

• Domain: All real numbers greater than or equal to -4 and less than or equal to 5

• Domain: All real numbers greater than -4 and less than 5

• Domain: All real numbers greater than or equal to -7 and less than or equal to 6

• Range: All real numbers greater than or equal to -4 and less than or equal to 5

• Range: All real numbers greater than or equal to -7 and less than or equal to 6

The daily cost of hiring a plumber, p(t), to work t hours on a repair project can be modeled using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of $45 per hour. The plumber works a maximum of 8 hours per day.

For one day of work, what is the range of the function for this situation?

Answer explanation

Remember - identify the dependent p(t) and the independent t.

Domain or Range?

Discrete or Continuous?

Sketch a graph?

• All real numbers

Answer explanation

Remember - identify the dependent d(m) and the independent m.

Domain or Range?

Discrete or Continuous?

Sketch a graph?