Solving Systems of Equations Using Substitution

What method is introduced for solving systems of equations in this tutorial?

• Elimination

• Substitution

• Graphing

• Matrix Method

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

In the first example, what is the value of x when y equals 2?

• 6

• 8

• 9

• 10

Tags

CCSS.HSF.IF.A.2

What is the first step in solving the system of equations in the second example?

• Solve for x

• Distribute and combine like terms

• Substitute y into the second equation

• Isolate y

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the value of x in the second example when y equals 2x - 2?

• -5

• -3

• 5

• 3

After finding x in the second example, what is the next step?

• Isolate y

• Check the solution

• Substitute x back into one of the original equations

• Graph the equations

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the y-coordinate in the second example when x is -5?

• -10

• -12

• -14

• -16

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What is the first step in solving a system of equations using substitution?

• Graph the equations

• Combine like terms

• Distribute

• Isolate one of the variables

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

In the third example, what is the value of x when y equals -4x + 20 and y equals 2x - 22?

• 5

• 6

• 7

• 8

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the y-coordinate in the third example when x is 7?

• -12

• -10

• -8

• -6

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What is the solution point for the system of equations in the third example?

• (7, -8)

• (8, -7)

• (6, -7)

• (7, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6