Solving Systems with Substitution (x/y alone)

Solve the system of equations using substitution.
 $y=-3x$  
 $-2x-y=-3$  

•  $\left(9,-3\right)$  

•  $\left(-3,9\right)$  

•  $\left(3,-9\right)$  

•  $\left(-9,3\right)$  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution.
 $y=-2x+2$  
 $6x+2y=1$  

•  $\left(-\frac{3}{2},5\right)$  

•  $\left(5,-\frac{3}{2}\right)$  

•  $\left(\frac{5}{2},7\right)$  

•  $\left(7,\frac{5}{2}\right)$  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution.
 $3x-5y=12$  
 $x=-2y+4$  

•  $\left(26,-11\right)$  

•  $\left(-11,26\right)$  

•  $\left(0,4\right)$  

•  $\left(4,0\right)$  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution.
 $2x-4y=-4$  
 $x=-2y+8$  

• no solution

•  $\left(2,3\right)$  

•  $\left(3,\frac{5}{2}\right)$  

•  $\left(\frac{5}{2},3\right)$  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution.
 $7x-5y=-7$  
 $y=3x+11$  

•  $\left(-6,-7\right)$  

•  $\left(-7,-6\right)$  

•  $\left(6,29\right)$  

•  $\left(29,6\right)$  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution.
 $y=-3x-3$  
 $2x+4y=8$  

•  $\left(2,-9\right)$  

•  $\left(-9,2\right)$  

•  $\left(3,-2\right)$  

•  $\left(-2,3\right)$  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6