System of equations

Solve by using substitution method.

• (2, 7)
• (0, 1)
• (2/5, 9/5)
• (2, 5)

Solve by using elimination method.

• (3, 1)
• ( 5, -5)
• (2, 5)
• (15, 1)

For equations below, which method is easier to use? Why?

• Graphing, because both are already in y = mx + b form.
• Substitution, because one equation is already solved for y. 
• Elimination, because both are already in ax + by = c form. 
• None. 

For equations below, which method is easier to use? Why?

• Graphing, because both are already in y = mx + b form.
• Substitution, because one equation is already solved for y. 
• Elimination, because both are already in ax + by = c form. 
• None. 

For equations below, which method is easier to use? Why?

• Graphing, because both are already in y = mx + b form.
• Substitution, because one equation is already solved for y. 
• Elimination, because both are already in ax + by = c form. 
• None. 

Solve by elimination 
5x+6y= -10
3x-2y= -6

• (-2,0)
• (0,-2)
• (2,0)
• (0,2)

What is the solution to this system?
x - y = 6
y= 2x - 5

• (1,3)
• (-1,3)
• (-1,-7)
• (1,-7)

Solve by elimination:
4x+9y=28
-4x-y=-28

• (-7,0)
• (6,0)
• (-6,0)
• (7,0)

Solve by elimination:
3x+7y=23

-3x-7y=-17

• No solution
• ARN
• (-3,3)
• (3,3)

Solve for x and y
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)