Systems of Equations

Substitution (L1)

100

y = x

2x + 4y = 12

(2,2)

200

x + 3y = 24

x = 5y

(15,3)

300

y = 2x + 1

4x + 3y = 33

(3,7)

400

8x - 2y = 48

y + 3 = x

(7,4)

500

y = -3x - 1

2x + 3y = 18

(-3,8)

Substitution (L2)

100

y + x = 10

x + 3y = 20

(5,5)

200

y + 1 = 2x

2x - 2y = 4

(-1,-3)

300

-2x + y = 2

3x + 3y = -3

(-1,0)

400

3 = 2x + y

7x + 15y = -93

(6,-9)

500

4x - 3y = -7

-6x = 2y - 9

(1/2,3)

Elimination (L1)

100

x + y = 10

2x + y = 11

(1,9)

200

x - 5y = 10

4x + 5y = 15

(5,-1)

300

9x + 10y = 80

9x + 2y = 16

(0,8)

400

2x + 3y = 5

-2x + 4y = 9

(-1/2,2)

500

-4x + 7y = -34

-4x - 2y = 20

(-2, -6)

Elimination (L2)

100

x + y = 4

2x + 3y = 11

(1,3)

200

x + y = 8

5x + 10y = 90

(-2, 10)

300

2x - y = 8

3x + 3y = 12

(4,0)

400

3x - 8y = -21

4x - 2y = -2

(1, 3)

500

-4x + 3y = 20

-12x - 2y = 16

(-2, 4)

Trivia

100

What is the largest country in the world?

Russia

200

How many cards are in a standard deck of playing cards?

52

300

The first iPhone came out in what year?

2007

400

What is a ten sided shape called?

Decagon

500

What is the shortest day of the year? (least sunlight)

December 21st