solving systems of equations by substitution

Solve for x and y
5x + 3y = 7
y = 4

• (4,1)
• (4,-1)
• (1,4)
• (-1,4)

Tags

CCSS.HSA.REI.C.9

y = 3x
2x + y = 20

• (4, 8)
• (3, 9)
• (2, 6)
• (4, 12)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = 2x + 1
3x + y = 16

• x = 3
• (2, 7)
• (3, 5)
• (3, 7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve:
y = -3x -4
y = -8x - 9

• (5, 5)
• (-5, -5)
• (11, 13)
• (-1 , -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve:
x = -3y - 17
2x + 3y = -7

• (1, -20)
• (3, 0)
• (-5, -2)
• (10 , -9)

Tags

CCSS.HSA.REI.C.9

Solve the system of equations using substitution:
2x + 3y = -5
x = y + 5

• (-4, 1)
• (2, -3)
• (6, 1)
• (8, 3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system by substitution. 
y = 2x − 11 
2x − 8y = 4 

•  (6, 1)
• (6, −4)
• (6, −1)
• Infinite number of solutions  

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution:
-4x + 4y = 8
y = -2x - 10

• (-4, -2)
• (12, -34)
• (4, -18)
• (-2, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations.

• (3, -24)

• (0, 4)

• (-24, 3)

• No solution

• Infinite solutions

Tags

CCSS.8.EE.C.8B