Domain Range Function and Not a Function

The graph shows the function g. Which of the following statements is NOT true?

• The function is continuous.

• $78,750

• $210,750

• -$13,950

• $239,250

Two students created the graphs shown. Whose graph represents a function?

• Rudolf's graph

• Efren's graph

• Both graphs represent functions

• Neither graphs represent functions

What is the domain and range for this graph?

• All real numbers

A student borrowed $480 from a friend. He agreed to make monthly payments of $96 with no interest until the loan balance was paid off. The function shown models this situation, where f(x) represents the remaining loan balance in dollars after the student has made x monthly payments. Which statements are true about the domain and range of the function for this situation? Select the correct answers.

• D: {0, 1, 2, 3, 4, 5}

• R: {0, 96, 192, 288, 384, 480}

• D: all real numbers

• R: {0, 1, 2, 3, 4, 5}

• {0, 96, 192, 288, 384, 480}

• D: {0, 96, 192, 288, 384, 480}

• R: all real numbers

Answer explanation

Domain - x values

Range - y values

Real-world examples = apply common sense and judgements

What is the domain and range of the given graph?

• all real numbers

The range of the graph is ​ (a)   . The domain of the graph is ​ (b)   . This ​ (c)   a function.

• {0,9,18,27,36,45,54,63,72}

• {0,1,2,3,4,5,6,7,8}

• is

• is not