Linear Systems 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

Is the point (2, -1) a solution to the systems of equations below?

y=5x+3

y=-2x-4

• Yes

• No

Is the point (-3, -7) a solution to the system of equations below?

y = 4x + 5

y = x – 4

• YES

• NO

What point is a solution to the system of equations below?

3x + 2y = 16

7x + y = 19

What is the solution?

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

Tags

CCSS.8.EE.C.8B

Solve by Substitution:

x = -3y - 17

2x + 3y = -7

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by Substitution:

y = -6

-3x - 6y = 24

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by Substitution:

y=3x+14

y=-4x

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution:

y = 7x + 7

2y + 2x = -18

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6