Section 3: Solving Systems

Solve the following system: (Substitution or Elimination?)

y = 4x + 1

3x + 2y = 13

• (1, 5)

• (5, 1)

• (0.25, 2)

• (-1,5)

Solve using elimination. 
 4x + 8y = 20
-4x + 2y = -30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

What is the solution to this system?

x= 7 - 2y

2x + y = 5

Hint - Step 1: 2(7-2y) + y = 5

• (-1,4)

• (4,-1)

• (1,3)

• (3,1)

Solve the system. (Substitution or Elimination?)

−8x − 10y = 20

−8x − 6y = −4

• Infinite number of solutions

• (6, 5)

• (−6, −5)

• (5, −6)

Solve by elimination

-2x + 6y = 16

-4x - 3y = 2

• (2,2)

• (-2, -2)

• (-2,2)

• (2,1)

^{What is the solution?} 

• 1

• -2

• (1, 2)

• (1, -1)

Tags

CCSS.8.EE.C.8A

What is the solution to the system?

• (0, 3)

• (1, -1)

• (-3, 1)

• (1, 3)

Tags

CCSS.8.EE.C.8B

Solve for x and y:
y = 2x + 1
y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

What is a solution of a linear system?

• the slope of the line

• the y-intercept

• the point where the systems intersect

• the rise over tun

Tags

CCSS.8.EE.C.8B

Solve:
x + y = 4
-5x - 6y = -18

• (6, -2)

• (-6, 10)

• (2, 2)

• (-2, 6)

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B