Solving Simultaneous Equations

What is the solution?

• (1, -1)

• (-1, 1)

• (0, -2)

• (2, 0)

Give the solution to the system.

• (3,1)

• (1,3)

• (-1,3)

• (1, -3)

Solve the simultaneous equations

x+y=5

x-y=1

• x=2, y=3

• x=3, y=2

• x=3, y=-2

• x=-3, y=2

Solve the simultaneous equations

a+b=11

a-b=3

• a=7, b = 4

• a=-4, b= 7

• a=4, b = 7

• a=4, b= -7

Solve the system of equations using substitution:

-4x + 4y = 8

y = -2x - 10

• (-4, -2)

• (12, -34)

• (4, -18)

• (-2, -6)

What is the solution to the system?

8x + 4y = 12

y = -2x + 3

• (0,3)

• (3,0)

• No solution(parallel lines)

• Infinitely many solutions

Solve the system of equations using substitution:

y = 2x + 5

2x + 2y = 4

• (1, 7)

• (7, 1)

• (2, 9)

• (-1, 3)

Solve the following simultaneous equations:

2x + 3y = 17

4x + y = 9

• x = 1

  y = 5

• x = -1

  y = 5

• x = 1

  y = -5

• x = -1

  y = -5

Solve the following simultaneous equations:

3x + 2y = 20

2x + y = 1

• x = 2

  y = 7

• x = -2

  y = 7

• x = 2

  y = -7

• x = -2

  y = -7

Solve the following simultaneous equations:

5x + y = 22

3x + 3y = 18

• x = 4

  y = 2

• x = -4

  y = 2

• x = 4

  y = -2

• x = -4

  y = -2