Systems Substitution

What is the solution to the following system?

^{x = 4y}

^{x - 4y = 0}

• (0, 0)

• no solutions

• infinite solutions

• (4, 0)

Tags

CCSS.8.EE.C.8B

What is the solution to the following system?

^{y = 2x}

^{x + y = 9}

• (3, 6)

• (2, 9)

• (6, 3)

• no solutions

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the following system?

^{y = 8x - 9}

^{y = 7}

• (7, 14)

• (2, 7)

• (2, 14)

• (47, 7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Use Substitution to find the solution: y = 4x + 2 y = 2x +4

• (1,6)

• (1,1)

• (6,1)

• (6,6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which option correctly substituted the following Systems of Equations? y = -3x + 19 3x - 2y = -2

• 3(-3x + 19) - 2y = -2

• 3x + 2(-3x + 19) = -2

• 3x - 2(-3x+19) = -2

• 3x - (-3x + 19) = -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

We know x = 4 for the following System of Equations:

y = -3x + 19

3x - 2y = -2

Now Solve for y.

• y = -7

• y = 7

• y = -31

• y = 31

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which is the correct substitution?

x = -2y + 4

-5x + 4y = 8

• -5x + 4(-2y + 4) = 8

• -5(-2y - 4) + 4y = 8

• -5(-2y + 4) + 4y = 8

• -2y + 4 + 4y = 8

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the correct substitution?

• 2x + 3 = -3x + 3

• 2x + 3 = 3x - 3

• y = -3(2x + 3) + 3

• y = 2(-3x + 3) + 3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When a System of Equations gets an answer like 5 = 5, which is TRUE, how many solutions does the system have?

• 1 Solution

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.8B

If the system of equations gets an answer like 0 = 1, which is false, how many solutions does the system have?

• 1 Solution

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.8B