Linear functions SAT question

Choice B is correct. The y-intercept of the graph of a function in the xy-plane is the point on the graph where $x=0$. It′s given that $f(x)=\frac{1}{10}x-2$. Substituting $0$ for $x$ in this equation yields $f(0)=\frac{1}{10}(0)-2$, or $f(0)=-2$. Since it′s given that $y=f(x)$, it follows that $y=-2$ when $x=0$. Therefore, the y-intercept of the graph of $y=f(x)$ in the xy-plane is $(0,-2)$.

Choice A is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect and may result from conceptual or calculation errors.

Choice D is incorrect and may result from conceptual or calculation errors.