T12 - Alg - Solving Systems by Substitution

The solution (x, y) to a system of equations is the point where they...? 

• Run off the graph
• Don't touch
• Intersect
• Exist

Tags

CCSS.8.EE.C.8B

Solve the system of equations by substitution.

y = -4x + 5

y = 3x - 16

• (-3 , -25)

• (3 ,-7)

• (11 , 17)

• (- 7, 3)

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 using substitution.

x + 2y = 2

3x + 4y = 8

• (-4 , -2)

• (-2 , 3)

• (1 , -4)

• (4 , -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

Tags

CCSS.8.EE.C.8B

Solve:

x = -3y - 17

2x + 3y = -7

• (8 , -12)

• (3 , 0)

• (-5 , -2)

• (10 , -9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The first step in solving using the substitution method is __________.

• get x by itself

• get y by itself

• get either variable by itself in one equation

• add the equations together

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution:

-4x + 4y = 8

y = -2x - 10

• (-4 , -2)

• (2 , -4)

• (4 , -1)

• (-2 , -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How many solutions will this system have?

• No Solution
• Infinitely Many Solutions
• No Clue
• One solution

Tags

CCSS.8.EE.C.8A

Solve the system using the substitution method.

3x + 2y = 5

4x + 5y = 16

• Infinitely Many Solutions

• (0 , 6)

• (-1 , 4)

• (12 , -5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6