Solving Systems Substitution and Graphing

If the solution is infinitely many the lines will ________?

• intersect at exactly one point

• be parallel

• overlap each other

• never exist

Tags

CCSS.8.EE.C.8A

What is the solution?
(Hint:  Both lines are graphed over each other)

• One Solution

• No solution

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8A

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

• get x by itself

• get y by itself

• get either variable by itself

• add the equations together

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which equation is set up correctly if you were to solve this system by substitution?

• x - 3y - 8 - 2y = -3

• -3y - 8 = x - 2y

• -3y - 8 - 2y = -3

• x - 2(-3y - 8) = -3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which equation is set up correctly if you were to solve this system by substitution?

• -4x + 2x + 5 = 9

• -4(2x + 5) + y = 9

• 2x + 5 = -4x + y

• -4x + y + 2x + 5 = 9

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which equation would you use if you were to solve this system by substitution?

• 7x + 3x +10 = - 20

• 7(3x + 10) + y = - 20

• 7x + y = 3x + 10

• 7x + y = - 20 + 3x + 10

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which equation is set up correctly if you were to solve this system by substitution?

• x = 2

• x + 2y = -4y + 2

• x + 2(-4y + 2) = 2

• -4y + 2 + 2y = 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -2x + 18
y = 8

• (5, 8)

• (-5, 8)

• (2, 8)

• (-2, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

These two lines intersect at _____

• (4, -2)

• (4, 2)

• (-2, 4) 

• No solution

Tags

CCSS.8.EE.C.8B

What is the solution to this system?

• (-2, -2)

• (2, -2)

• (-2,2)

• (2, 2)

Tags

CCSS.8.EE.C.8B