Solving Systems of equations using elimination

• (1, 4)

• (4, 1)

• (1, -4)

• (-4, 1)

• (-5, -9)

• (9, 5)

• (5, 9)

• (-9, -5)

• (4, -2)

• (-2, 4)

• (2, 4)

• (2, -4)

• (-7, -1)

• (1, 7)

• (-1, -7)

• (7, 1)

• (-3, 2)

• (3, 2)

• (-2, 3)

• (2, -3)

Solve the system using elimination.
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Solve by elimination 
  2x + 9y = -7
6x - 3y = 9 

• (-1, -1) 
• (2,-1)
• (1,1)
• (1,-1)

Parallel Lines never intersect because...

• they have the same slopes. 
• they have the same y-intercept.
• they have different slopes.
• they have different y-intercepts. 

Determine how many solutions the system has.

• One Solution
• No Solutions
• Infinitely Many Solutions
• Mikey is my friend.

Determine how many solutions the system has.
(Hint:  Both lines are graphed over each other)

• One Solution
• No solution
• Infinitely Many Solutions
• I am Spartacus!