Functions Domain and Range

What is the domain of an exponential function?

• only negative numbers

• only positive numbers

• only integers

• all real numbers

What is the range of an exponential function?

• (-infinity, 0)

• (0, 1)

• (1, infinity)

• (0, infinity)

What is the range of an exponential equation?

• (0, 1) or (1, 10) or (10, infinity)

• (0, infinity) or (0, 1) or (-infinity, 0)

• (-infinity, 0) or (0, 1) or (1, infinity)

• (0, 1) or (1, 2) or (2, infinity)

Convert the range of the exponential equation y = 3^x to interval notation.

• (0, +∞)

• (-∞, +∞)

• [0, +∞)

• (-∞, 0)

• 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 & range?​ (a)   ​ (b)  

• domain: x=3

• range: all real numbers

• domain: all real numbers

• range: y=3

• range: -5<y<10

• domain: x>3

What is the domain and range for this graph?

• All real numbers

What is the domain and range of the given graph?

• all real numbers