Unit Test Answers

y = 3x

Which statements about the graph of the function are true?

The function, f, shifts the parent function 5 units .

y = 3−x

The domain of an exponential function is . The range of an exponential function is .

The domain of an exponential function is . The range of an exponential function is .

Which functions have a horizontal asymptote?

If h is instead negative, the curve shifts

The parent function y = 0.5x is across its domain because its base, b, is such that .

y = 3−x

Next, change the slider for k to different positive values. The curve shifts k units

The graph of an exponential function has .

Which shows the domain and range of these functions?

Next, change the slider for k to different positive values. The curve shifts k units

y = −3x

The graph is throughout its domain and has at the x–axis because the value bx can get very close to 0 but never reach it.

When b > 1, as x grows in the negative direction, y . When 0 < b < 1, as x grows in the negative direction, y .

If k is instead negative, the graph shifts

The function, f, shifts the parent function 5 units .

The graph is throughout its domain and has at the x–axis because the value bx can get very close to 0 but never reach it.