Systems of Equations Graph Substitution

If a system of linear equations has one solution, what does this mean about the two lines?

• Parallel lines

• the same line

• Intersecting lines

If a system of linear equations has infinitely many solutions, what does this mean about the two lines? 

• Intersecting lines

• Same line

• Parallel lines

What is the solution to the system?

• (3, -1)

• (2, -6)

• No Solution 

• (6, -2)

Is the ordered pair (-3, -7) a solution to the following system? 
y = 4x + 5
y = x – 4

• YES

• NO

• All ordered pairs are solutions to this system

• This system has NO Solutions

Solve using Substitution

• (3,8)

• (8,3)

• (0,2)

• (2,0)

Solve the system of equation using substitution.
y = 2x + 1
y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the system of equations:
−4x + 9y = 9
    x − 3y = −6 

• (-9,-5)

• (-5,9)

• (9,5)

• (-5,-9)

What is the best method to solve this system of equations?

5x - 4y = 11

5x + 4y = -14

• Graphing

• Substitution

• Elimination

• Connection

What is the best method for solving this system of equations?

• Graphing

• Googling

• Elimination

• Substitution

What is the best method to solve this system of equations?

y = 2x + 1

y = 4x - 1

• Graphing

• Substitution

• Dabbing

• Elimination