# What would roughly be the function of these graphs?

Questions like this has probably been asked alot, however google was unable to aid me, so im asking here.

In the following picture of 2 graphs, im trying to find the approximate function of the below graphs, aswell as their signs and zeros. however, i've been unable to figure out how to read the functions of below graphs and hope you can help me

The first one, try $f(x) = Ce^{\frac{-(x-a)^2}{b}}$. The second $g(x)=ax^4 +bx^3 + cx^2 +dx +m$.
The first is either $$y=\frac{1}{1+ax^2}$$ or $$y=e^{-ax^2}$$ where $a$ is a constant.
The second is a negative quartic function, so something of the form $y=ax^4+bx^3+cx+d$ where $a$ is negative and $d$ is between $0$ and $0.5$