3 X 3 System Using Elimination

Heidi completes one step of solving a 3x3 system of equations and has a result of 5=5.  She can say with 100% certainty that there are IMS?

• Yes 
• No

What is the x and y value for the ordered triple?

• x=0, y=0
• x=2, y=-2
• x=0, y=1
• no solution

What is the value of a for the ordered triple?

• 0
• 5
• -2
• no solution

Solve the system 
-x -4y -2z = 20
-x -5y -5z = 23
x -3y -z = 19

• (2, -6, 1)
• (1, -4, 5)
• (-1, -12, -8)
• (0, -8, -6)

Solve the system 
4x - 3y -5z = -1
5x + 3y - 3z = 9
-2x - 6y -4z = -8

• (1, 2, 3)
• (0, 2, -1)
• (7, -6, -12)
• (0, -6, 3)

Solve the system 
-x + y - 6z = 14
-6x + 6y +6z = 0
-5x +5y +4z = 7

• (0, 5, 2)
• (-12, 12, 4)
• No Solution
• Infinitely Many Solutions