Systems of Equations - Substitution and Elimination

When solving the system of equations, which expression could be substituted for x in the second equation? x + 2y = 15

5x + y = 21

• 15 - 2y

• 21 - 5x

Tags

CCSS.MATH.CONTENT.HSA.CED.A.3

CCSS.MATH.CONTENT.HSA.REI.C.6

If x = 2y + 3 and 4x - 5y = 9, what is the value of y?

• 2

• 1

• -1

• -2

Tags

CCSS.MATH.CONTENT.HSA.CED.A.3

CCSS.MATH.CONTENT.HSA.REI.C.6

If x = 5y - 1 and 2x + 5y = -32, what is the value of y?

• -2

• 2

• 1

• -1

Tags

CCSS.MATH.CONTENT.HSA.CED.A.3

CCSS.MATH.CONTENT.HSA.REI.C.6

Use substitution to solve the system x + 2y = 1 and 2x + 5y = 3.

• (-1, 1)

• (1, -1)

• (-5, 3)

• (-1, -1)

Tags

CCSS.MATH.CONTENT.HSA.CED.A.3

CCSS.MATH.CONTENT.HSA.REI.C.6

Solve the system and find the value of y.

3x - 5y = -35

2x - 5y = -30

• 4

• 4/5

• -4

• -4/5

Tags

CCSS.MATH.CONTENT.HSA.CED.A.2

CCSS.MATH.CONTENT.HSA.REI.C.6

Solve the system and find the value of y. 6x + 3y = 12 5x + 3y = 0

• -20

• -1 9/11

• 20

• 1 9/11

Tags

CCSS.MATH.CONTENT.HSA.CED.A.2

CCSS.MATH.CONTENT.HSA.REI.C.6

Use elimination to solve the system x - 4y = 1 and x + 2y = 19 for x.

• -11

• 3

• 25

• 13

Tags

CCSS.MATH.CONTENT.HSA.CED.A.2

CCSS.MATH.CONTENT.HSA.REI.C.6

Use elimination to solve the system 3x + 5y = 16 and 8x - 5y = 28 for x.

• -6

• 5

• 4

• -4

Tags

CCSS.MATH.CONTENT.HSA.CED.A.2

CCSS.MATH.CONTENT.HSA.REI.C.6

Use elimination to solve the system x + 7y = 16 and 3x - 7y = 4 for x.

• 3

• 4

• 5

• -6

Tags

CCSS.MATH.CONTENT.HSA.REI.C.5

CCSS.MATH.CONTENT.HSA.REI.C.6

Use elimination to solve the system 5x + 4y = -10 and 3x + 6y = -6 for y.

• -2

• -5

• 0

• 2

Tags

CCSS.MATH.CONTENT.HSA.REI.C.5

CCSS.MATH.CONTENT.HSA.REI.C.6