91Ó°ÊÓ

Solve the system by elimination Then state whether the system is consistent inconsistent. $$\left\\{\begin{aligned} \frac{x+3}{4}+\frac{y-1}{3} &=1 \\ x-y &=3 \end{aligned}\right.$$

Solve the system by the method of substitution. $$\left\\{\begin{array}{l}6 x+5 y=-3 \\ -x-\frac{5}{6} y=-7\end{array}\right.$$

Solve the system by elimination Then state whether the system is consistent inconsistent. $$\left\\{\begin{array}{r}\frac{x-1}{2}+\frac{y+2}{3}=4 \\ x-2 y=5\end{array}\right.$$

Solve the system of equations. $$\left\\{\begin{array}{l}2 x+3 y=0 \\ 4 x+3 y-z=0 \\ 8 x+3 y+3 z=0\end{array}\right.$$

Graph the solution set of the system of inequalities. $$\left\\{\begin{array}{rr}x-7 y & >-36 \\ 5 x+2 y & >5 \\ 6 x-5 y> & 6\end{array}\right.$$

Solve the system by the method of substitution. $$\left\\{\begin{array}{r}-\frac{2}{3} x+y=2 \\ 2 x-3 y=6\end{array}\right.$$

Graph the solution set of the system of inequalities. $$\left\\{\begin{array}{rr}x^{2}+y \leq & 6 \\ x \geq & -1 \\ y \geq & 0\end{array}\right.$$

Solve the system of equations. $$\left\\{\begin{array}{l}12 x+5 y+z=0 \\ 12 x+4 y-z=0\end{array}\right.$$

Solve the system by elimination Then state whether the system is consistent inconsistent. $$\left\\{\begin{aligned} 2.5 x-3 y &=1.5 \\ 10 x-12 y &=6 \end{aligned}\right.$$

Solve the system by the method of substitution. $$\left\\{\begin{array}{l}y=2 x \\ y=x^{2}-1\end{array}\right.$$