Solving for X Y Constants

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 Simultaneous Equations: a+b= 3; a-b= -7

• a=-2, b = 5
• a=2, b = -5
• a=2, b = 5
• a=-2, b = -5

Solve the Simultaneous Equations: 2a+b=11; a+b=8

• a=-3, b=5
• a=3, b=-5
• a=3, b=5
• a=-3, b=-5

3x + 2(4x - 4) = 3

• 4
• 3
• 2
• 1

Translate: 
Four times a number plus six IS 30.

• 4 + 6 = 30
• 4x + 6 = 30
• x + 4 times 6 = 30
• 30 = 4x

Where do these two lines intersect?

• No solution
• (-2, 3)
• (3, -2)
• (2, 3)

What is the solution?

• (6, 3)
• (3, 6)
• (-6, 3)
• No solution

Solve the system of equations using substitution:
-4x + 4y = 8
y = -2x - 10

• (-4, -2)
• (12, -34)
• (4, -18)
• (-2, -6)

Solve the system of equations using substitution:
y = 2x + 5
2x + 2y = 4

• (1, 7)
• (7, 1)
• (2, 9)
• (-1, 3)