System of equations 1

Which of the following methods is not a direct method?

• Gauss elimination

• Gauss jordan

• Gauss Jacobi

Which of the following methods is not an indirect method?

• Gauss seidel

• Gauss jordan

• Gauss Jacobi

• None

Solve by elimination 
5x+6y= -10
3x-2y= -6

• (-2,0)
• (0,-2)
• (2,0)
• (0,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The cost of 5 apples and 2 bananas is Rs.80 . Three apples and 1 banana cost Rs.46. Write a system of equations.

• 5a+ 2b = 80

  1b = 46

• 5a + 2b = 80

  3a + 1b = 46

• q + z = 80

  q + z = 46

• 5q + 2z = 46

  3q + 1z = 80

This is an example of a

• System of Quadratic Equations

• Reduced Row Echelon Form

• Augmented Matrix

• A Canine Doing a Backflip

Tags

CCSS.HSA.REI.C.8

CCSS.HSA.REI.C.9

What is an appropriate first row command to solve this by Gaussian Elimination?

• 2R2 + R2 -> R2

• -2R1 + R2 -> R2

• R3 +R2 --> R3

• 2R1 + R2 --> R2

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.C.6

CCSS.HSA.REI.C.8

Aina is simplifying the matrix using Gaussian Elimination. Did she complete the step correctly?

• No, she should have changed the 2 to a zero and multiplied -2 by R2 and added R1

• No, she wanted to change the 3 to a zero so she should have multiplied R2 and added it to R3

• Yes. When you need a zero you multiply by the number's reciprocal.

• No. Just punch in the calculator. Who cares about Carl Gauss

A _____ is a rectangular arrangement of numbers.

• matrix
• dimension
• coefficient
• system

Tags

CCSS.HSN.VM.C.6

When an element is missing in an equation, what value must go into the matrix for it?

• 1

• -1

• 0

• NA

Tags

CCSS.HSN.VM.C.6

What is the value of z?

• 6

• -6

• -36

• 4

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.C.8

CCSS.HSA.REI.C.9