Solving Systems Using Substitution or Elimination

Should you use the Substitution or Elimination method to solve this system of equations?

• Substitution

• Elimination

Should you use the Substitution or Elimination method to solve this system of equations?

• Substitution

• Elimination

• Graphing, Not Graphing...

  (aka Picturing the Graph)

  (aka Using graphing skills but not actually graphing)

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

• Substitution

• Elimination

• Graphing, Not Graphing...

  (aka Picturing the Graph)

  (aka Using graphing skills but not actually graphing)

How many solutions does this system of equations have?

• One Solution

• No solution

• Infinitely Many Solutions

• Two Solutions

Should you use the Substitution or Elimination method to solve this system of equations?

• Substitution

• Elimination

x = -3y - 8

x - 2y = -3

The above System is CURRENTLY setup to solve by:

• Substitution

• Elimination

• Graphing, Not Graphing...

  (aka Picturing the Graph)

  (aka Using graphing skills but not actually graphing)

Solve the system using substitution:

x + y = 19

y = 3x - 1

• (14, 5)

• (11, 8)

• (5, 14)

• (8, 11)

Solve the system using elimination:

3x + y = 19

2x - y = 6

• (5, 14)

• (4, 5)

• (5, 4)

• (14, 5)

Solve the system using elimination:

2x + 3y = -2

3x - 2y = 23

• (5, -4)

• (-4, 5)

• (-5, 4)

• infinite solutions

Solve the systems using substitution:

y = 7x + 9

2y + 2x = -18

• (5, 0)

• (9, 18)

• (-2, -5)

• (1, 16)