Solving Systems by Substitution (All Levels)

Level 1: Solve the systems of equation by substitution:

 $y=5$  
 $x+y=9$  

• (5, 4)

• (4, -5)

• (4, 5)

• (-4, 5) 

Level 1: Solve the systems of equation by substitution:

 $y=-3$  
 $x=y+7$  
  

• (-10, -3)

• (-4, -3)

• (10, -3)

• (4, -3)

Level 1: Solve the systems of equation by substitution:

   $x=-8$  
 $y=x-10$  
  

• (-8, -18)

• (8, 18)

• (-18, -8)

• (18, 8)

Level 1: Solve the systems of equation by substitution:  

 $x=-11$  
 $2x+y=33$  

  

• (-11, 55)

• (-11, 55)

• (55, 11)

• (-11, 11)

Level 1: Solve the systems of equation by substitution:
 $7x-2y=7$  

 $y=7$  

• (-7, -10)

• (3, 10)

• (7, 10)
  

• (3, 7)

 $y=x+12$  

 $y=-2x+9$  

Level 2: Solve the systems of equation by substitution:

• (-1, 11)

• (1, 11)

• (-11, -1)

• (1, 0)

 $y=\ 4x$  
 $y\ =\ x+6$  

Level 2: Solve the systems of equation by substitution:

• (8, 2)

• (2, 8)

• (-2, -8)

• (-8, -2)

 $y=\ -10x-19$  

 $y=\ -2x+5$  

Level 2: Solve the systems of equation by substitution:

• (7, 6)

• (4, 5)

• (-12, 4)

• (-3, 11)

 $y\ =\ 6x-8\$  

 $y=\ 2x+20$  

Level 2: Solve the systems of equation by substitution:

• (9, 0)

• (7, 34) 

• (0, 9)

• (-4, -16)

 $y=7x-9$ 
  $y=13x-9$  

Level 2: Solve the systems of equation by substitution:

• (-2, -4)

• (-1,4)

• (9, -9)

• (0, -9)