SAT Question 4fb8adf7: Systems of Linear Equations answer and explanation with Desmos solution

Choice A is correct. The second equation in the given system is $x=8$. Substituting $8$ for $x$ in the first equation in the given system yields $4(8)-3y=5$, or $32-3y=5$. Subtracting $32$ from both sides of this equation yields $-3y=-27$. Dividing both sides of this equation by $-3$ yields $y=9$. Therefore, the solution $(x,y)$ to the given system of equations is $(8,9)$.