Graphing Functions Practice Test

A coordinate plane shows an exponential curve labeled $f(x)$. It passes through $(0,2)$ and $(1,4)$ and approaches $y=0$ as $x$ decreases. Which equation matches the graphed function? Be careful: confusing the base or the initial value would produce a similar-looking curve.

The coordinate plane shows a line segment graphed for a function $f$. The segment starts at a closed dot at $(-4,3)$ and ends at an open dot at $(2,-3)$. What is the domain of the graphed function? Read the endpoint symbols carefully to avoid including an excluded value.