Solving Systems of Equations by Substitution

2 or more linear equations with the same set of variables

• System

• System of Equations

• Linear Equations

• Quadratic Equations

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -6x - 2 y = 4x - 12

• (1, 8)

• (1, -8)

• (-1, 8)

• (1, 0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -5x + 16 3x + 5y = -8

• (-1, -1)

• (1, 4)

• (-1, -2)

• (-1, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -5x - 14 y = 5x + 6

• (-2, 4)

• (-4, -2)

• (-2, -4)

• (-2, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to this system? Solve by substitution.
y= 4x + 3
2x - 3y = 21

• (3,-9)

• (-3,-9)

• (-3,9)

• (0,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

solve by substitution: y=3x+14
y=-4x

• y=3

• y=1

• y= - 2

• y=4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = 5x + 7

8x - 8y = -24

• (4, -4)

• (-4, -4)

• (4, 4)

• (4, 0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = 2x - 6 y = -5x + 15

• (3, -1)

• (3, 2)

• (3, 0)

• (3, 11)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

4x + 2y = 12

y = 3x - 14

• (4, -4)

• (4, 4)

• (-2, -2)

• (4, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -4x + 17 y = -5x + 23

• (6, -7)

• (4, -6)

• (6, 4)

• (6, -4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6