Solving Linear Systems by Substitution

An ordered pair that satisfies both equations in a system of linear equations is called a ​ (a)   to the system of equations.

• solution
• coordinate
• inconsistent
• input

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

Tags

CCSS.8.EE.C.8B

Solve for x and y using substitution

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The solution of a system of linear equations is...

• the y-intercept (b)
• the intersection of the two equations on a graph
• the second equations' answers
• the slope (m)

Tags

CCSS.8.EE.C.8B

Solve by substitution:

y + 14 = 3x

y = -4x

Type your answer as (x, y)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which problem would be easier to solve by substitution?

• y + x = 3

  2y + x = 6

• 3y - x = 7

  2y = x + 6

• 5x - 2y = 6

  x + y = 2

• y = 2x + 2

  x + y = 7

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Tags

CCSS.HSA.REI.C.9

Choose the system of linear equations that matches the word problem:

The sum of two numbers is 50. The bigger number is 5 times the smaller number. What are the two numbers?

Tags

CCSS.8.EE.C.8C

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6