91Ó°ÊÓ

Solve each system of equations by graphing. If the system is inconsistent or the equations are dependent, say so. $$ \begin{aligned} &2 x-y=4\\\ &4 x-2 y=8 \end{aligned} $$

Solve each system by the substitution method. Check each solution. $$ \begin{aligned} &\frac{1}{2} x-\frac{1}{8} y=-\frac{1}{4}\\\ &\frac{1}{3} x-\frac{1}{12} y=-\frac{1}{6} \end{aligned} $$

Solve each system by the elimination method. $$ \begin{aligned} &3 x=3+2 y\\\ &-\frac{4}{3} x+y=\frac{1}{3} \end{aligned} $$

Solve each system of equations by graphing. If the system is inconsistent or the equations are dependent, say so. $$ \begin{aligned} &3 x-4 y=24\\\ &y=-\frac{3}{2} x+3 \end{aligned} $$

Solve each system by the substitution method. Check each solution. $$ \begin{aligned} 0.2 x-1.3 y &=-3.2 \\ -0.1 x+2.7 y &=9.8 \end{aligned} $$

Solve each system of equations by graphing. If the system is inconsistent or the equations are dependent, say so. $$ \begin{aligned} &4 x+y=5\\\ &y=\frac{3}{2} x-6 \end{aligned} $$

Solve each system by the substitution method. Check each solution. $$ \begin{aligned} &0.1 x+0.9 y=-2\\\ &0.5 x-0.2 y=4.1 \end{aligned} $$

Solve each system by the elimination method. $$ \begin{aligned} &3 x=27+2 y\\\ &x-\frac{7}{2} y=-25 \end{aligned} $$

Solve each system of equations by graphing. If the system is inconsistent or the equations are dependent, say so. $$ \begin{aligned} &2 x=y-4\\\ &4 x+4=2 y \end{aligned} $$

Solve each system by the elimination method. $$ \begin{array}{l} {\frac{1}{5} x+y=\frac{6}{5}} \\ {\frac{1}{10} x+\frac{1}{3} y=\frac{5}{6}} \end{array} $$