Solve Linear Systems by Substitution
- $$\begin{aligned}\mathrm { y } & = 3 \mathrm { x } - 1 \\4 \mathrm { y } + 16 \mathrm { x } & = 80\end{aligned}$$

Multiple Choice

Solve Linear Systems by Substitution
- $$\begin{aligned}\mathrm { y } & = 3 \mathrm { x } - 1 \\4 \mathrm { y } + 16 \mathrm { x } & = 80\end{aligned}$$

A) $\{ ( 3,8 ) \}$
B) $\{ ( 8,3 ) \}$
C) $\{ ( - 3,8 ) \}$
D) $\varnothing$