System of Equations Different Strategies

7x+4y =12 
x + 2y = -4

• (-4,4)
• (4,4)
• (4,-4)
• (-4,-4)

x + 2y = -4
x - 2y = 8

• (2,5)
• (2,-3)
• (2,-2)
• (-3,2)

7x - 2y = 6
x - 2y = -6

• (2,4)
• (3,-2)
• (1,2)
• (-2,-4)

x-4y = 16
5x + 4y = 8

• (4,-3)
• (-3,4)
• (4,3)
• (3,-4)

5x - 2y = 6
x - 2y = -2

• (2,2)
• (2,1)
• (1,2)
• (-2,-2)

x + y = 3
3x - y = 1

• (2,1)
• (-1,2)
• (1,2)
• (-2,-1)

x -2y = -2
3x - 2y = 6

• (4,3)
• (-3,4)
• (-2,-3)
• (-3,-4)

3x - 2y = -8
5x + 2y = -8 

• (1,-4)
• (-1,-4)
• (-4,1)
• (-2,1)

x - 4y = -4
x + 2y = 8

• (2,2)
• (4,2)
• (2,-2)
• (4,-2)

x - 2y = 4
3x +2y = 4

• (-2,-1)
• (4,-1)
• (2,-1)
• (4,1)