SAT Question 7160cbb3: Nonlinear Functions answer and explanation with Desmos solution

Choice A is correct. The y-intercept of a graph in the xy-plane is the point $\left(x,y\right)$ on the graph where $x=0$. For the graph shown, at $x=0$, the corresponding value of y is $-6$. Therefore, the y-intercept of the graph shown is $\left(0,-6\right)$.