Systems of Equations

Solving by Elimination

100

-2x - 3y = -7

  x  - 2y =3

x=5, y=−1

200

-15x + 6y = -36

-8x + 6y = -22

(2, -1)

300

-3x - 24y = -66

3x + 4y = -14

(-10, 4)

400

2x - y = 6

x - y = 5

x = 1

y= -4

500

-6x - 10y = 4

6x + 10y = 0

No solution

Solving by Substitution

100

The solution to the system:

x = 4y
2x + 3y = 22

What is (8, 2)

200

The solution to the system

-x + y = - 2
3x - y = 16

What is (7, 5)

300

The solution to the system

-3x + y = - 1
7x + 2y = 37

What is (3, 8)

400

4x+5y=12

x+3y=5

x=1,y=4

500

-8x + y = -7

16x - 2y = 14

Infinite Solutions jeje

Raúl's Trivia

100

Football team

Real Madrid

200

Favourite Movie

Lion King

300

Favourite Football Player 

Ronaldinho

400

Favourite city

- Amsterdam

- Edimburgo

- Madrid

500

Afraid of...

a) Sharks and Lions

b) Wasps and Jellyfish

c) Spiders and Snakes

Any Method

100

Nadie la va a coger...

Así que 100 puntos free!

200

3x+y=7

x+2y=5

x=2,y=1

300

2x+4y=10

x−3y=1

x=4,y=1

400

4x−3y=6

x+2y=3

x=0

y=3

500

3x+2y=10

2x−3y=−4

x= 2

y= 2