Thursday 4/23 8th Grade Solving Systems of Equations

What is the best method to use?

y = 6x − 11

−2x − 3y = −7

• Elimination because both equations are in standard form.

• Substitution because a variable is defined

What is the best method to use?

−4x − 2y = −12

4x + 8y = −24

• Elimination because the equations are in standard form.

• Substitution because a variable is defined

Solve the system given:
3x - y = 7
2x + y = 3

• (-1,2)
• (5,4)
• (4,5)
• (2,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system given:

5x + 3y = 7

y = 4

• (4,1)

• (4,-1)

• (1,4)

• (-1,4)

Solve the system given:

y= 3x -13

2x +4y =4

• (5,2)

• (4, -1)

• (-4, -1)

• (5, -2)

• (-4, 1)

Solve the system given:

7x + 4y = -6

-7x - 6y = 30

• (6, -12)

• (6, 12)

• (-12, 8)

• (12, -8)

Solve the system given:

-3x+3y = 18

5x-3y = -26

• (4,2)

• (-4,-2)

• (-4,2)

• (4,-2)

Solve the system given:

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)