1. The problem is to find the y-coordinate for the point where $x=2$ on the graph of the function $y=3^x$. 2. The formula given is $y=3^x$, which means for any value of $x$, $y$ is $3$ raised to the power of $x$. 3. To find the y-coordinate when $x=2$, substitute $2$ into the equation: $$y=3^2$$ 4. Calculate $3^2$: $$3^2=3 \times 3=9$$ 5. Therefore, the coordinate pair is $(2,9)$, which satisfies the equation $y=3^x$ at $x=2$. The final answer is $(2,9)$.