#### Answer

This graph represents exponential growth
The y-intercept of this graph is (0, 1)

#### Work Step by Step

In order to determine whether this graph represents exponential growth or exponential decay, we must first remember that exponential growth and decay functions look like this:
${y}$ = ${a}$${b}$$^{x}$
${a}$ = y-intercept
${b}$ = Rate of growth/decay
If ${b}$ is between 0 up to but not including 1, the function is exponential decay.
If ${b}$ is greater than 1, the function is exponential growth.
In the case of this question, ${b}$ is equal to 3, which is greater than one. Therefore, this function is an exponential growth function.
To find the y-intercept, look at ${a}$. In this case, there does not appear to be an ${a}$, so it must be equal to 1. This function intersects the y-axis at 1 units up, or (0, 1)