Graph the function y=1/5 (2)^x. What is the y-intercept?

(0,_)

1 answer

To find the y-intercept of the function \( y = \frac{1}{5}(2)^x \), we can substitute \( x = 0 \) into the equation.

Calculating this:

\[ y = \frac{1}{5}(2)^0 \] Since \( (2)^0 = 1 \):

\[ y = \frac{1}{5}(1) = \frac{1}{5} \]

The y-intercept is the point where the graph intersects the y-axis, which occurs at \( x = 0 \). Therefore, when \( x = 0 \), \( y = \frac{1}{5} \).

Thus, the y-intercept is:

\[ (0, \frac{1}{5}) \]

To summarize, the y-intercept for the function \( y = \frac{1}{5}(2)^x \) is \( (0, \frac{1}{5}) \).