Solving System by Substitution & Graphing

What is the solution to this system? Solve by substitution.
y= 4x + 3
2x - 3y = 21

• (3,-9)
• (-3,-9)
• (-3,9)
• (0,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to this system? Solve by substitution.
2x + 3y = 4
y= 5x - 27

• (5,-2)
• (5, 2)
• (2,3)
• (3,2)

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

Solve by substitution.
y = -1x - 5
4x - 8y = 4

• (-3, -2)
• (5, -7)
• (3, 9)
• (-5, 4)

What is the solution to this system? Solve by graphing or substitution.
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

A system of linear equations is... 

• Math Magic
• One Equation
• Always more than 2 equations
• A set of 2 or more equations

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

Tags

CCSS.8.EE.C.8A

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

What is the solution to the following system of equations? Hint: Where are they the same?

• ( 0 , 3 )

• ( 2 , 1 )

• ( 3 , 2 )

• ( 1 , 1.5 )

What is the solution to the following system of equations? (Hint: Where are they the same)

• ( 3 , -1 )

• ( 7 , 7 )

• ( -1 , 3 )

• ( 1 , 1 )