Systems of Equations - Graphing and 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 (1,10) a solution to

y=7x+5

y=x+9

• yes

• no

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

Solve the following systems of equations using substitution:

2y + x = -15

x = 3y

• (-3, -9)

• (-9, -3)

• (-3, 9)

• (9, -3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

- 3x + y = -8
  x + y  = 4

• (3, 1)
• (1, 3)
• (3, -1)
• (-3, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

This system has _____ solutions

• no
• 1
• 2
• Infinitely many

Tags

CCSS.8.EE.C.8B

Solve for x and y.
y = 2/3x - 2
y = -x + 3

• (0,3)
• (0,-3)
• (3,0)
• (-3,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The equations of two lines are:
 2x-y=4 and y=-2x+8.
What is the value of x in the solution for this system?

• x=8
• x=3
• x=11
• x=5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

^{What is the solution?}

• 1

• -2

• (1, 2)

• (1, -1)

Tags

CCSS.8.EE.C.8B

 $5x+4=5x+4$  

• one solution

• no solution

• infinite solutions

Tags

CCSS.8.EE.C.7A