System of Equations in Three Variables

Solve the system of equations, and then sum up the x, y, and z values for the final answer below:

• 5, z is the smallest

• 6, z is the smallest

• None of these

• 0, x is the smallest

what is the value of s in the system of three

• s=3

• s=1

• s=2

• s=-1

What does 7R₂-R₃ produce ?

• [ 0 0 -1 | 20 ]

• [ 0 0 1 | 20 ]

• [ 0 0 1 | -20 ]

• [ 0 0 -1 | -20 ]

It is easiest for this system to eliminate the variable...

• x

• y

• z

• It is equally simple to eliminate y or z, since they both require 2 multiplications.

What variable should I eliminate in the following system?

• x

• y

• z

What would you solve for First?

• Solve for x

• Solve for y

• Solve for z

• (5,3,4)

How many variables are we using if the solution set is \left(x,\, y,\, z\right)

• 1

• 0

• 3

• 2

How confident do you feel solving linear systems in three variables?

• Very confident, and could help a friend.

• Fairly confident, but would like more practice

• Somewhat confident, but have some questions

• Not confident yet, and would like some help

what is the value of s in the system

• s=3

• s=2

• s=1

• s=-1