Answer
Writing $\sqrt{2}$ in exponential form, $2^{1/2}$,
we can use the graph of $ f(x)=2^{x}$, by reading the y-coordinate of the point on the graph $(\displaystyle \frac{1}{2},y)$.
In this way, we get an approximation for $ y=2^{1/2}$=$\sqrt{2}$.
Work Step by Step
Given above.