Solve a System

What is the first step to solving this system by substitution?

• y = 4(3y - 5) - 10

• y = 3(4x - 10) - 5

• 4x - 10 = 3x - 5

• y = y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the first step to solving this system of equations by substitution?

• 2(-3x - 17) + 3x = -7

• 2x + 3(-3x - 17) = -7

• 2(-3y - 17) + 3y = -7

• 2(3y + 17) + 3y = -7

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the SECOND STEP in solving this system. x= 7 - 2y 2x + y = 5 FIRST STEP: 2(7 - 2y) + y = 5

• 14 - 2y + y = 5

• 14 - 4y + y = 5

• 14 + 4y + y = 5

• 14 + 2y + y = 5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the SECOND STEP in solving this system by substitution? y = -1x - 5 4x - 8y = 4 First step: 4x - 8(-1x - 5) = 4

• 4x - 8x - 40 = 4

• 4x + 8x + 40 = 4

• 4x + 8x - 40 = 4

• 4x - 8x + 40 = 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system.

• (3, -2, 4)

• (2, -3, 1)

• (-3, 2, -1)

• Infinitely many solutions

Solve the system.

• (1, 2, -2)

• (1, -3, -2)

• (-1, 3, 2)

• No Solution

Solve the system.

• (2, -2, 3)

• (2, 1, 4)

• (-2, 2, -3)

• No Solution

Solve the system. 

• (5, -6, 3)

• (2, 3, -1)

• (-4, 2, 5)

• No Solution

Solve:
y = -1x - 5
4x - 8y = 4

• (-3, -2)

• (5, -7)

• (3, 9)

• (-5, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve:
y=8x+1
y=6x+3

• (1, 9)

• (4, 14)

• (0, 1)

• (2, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6