Solving Systems of Linear Equations with DESMOS Matrix

What tools are suggested for solving systems of linear equations in this tutorial?

• Python programming

• Microsoft Excel

• Hand calculations

• Graphing calculator or Desmos

Before entering equations into Desmos, what must be ensured about the variables?

• They are all positive

• They are all integers

• They are all aligned in the same order

• They are all on the left side of the equation

Tags

CCSS.HSA.REI.C.8

What is the first step in preparing the equations for matrix input?

• Finding the determinant

• Solving for x

• Rewriting the equations to align variables

• Graphing the equations

Tags

CCSS.HSA.REI.C.8

How many rows and columns should the matrix have if there are three variables and three equations?

• 3 rows and 3 columns

• 4 rows and 3 columns

• 4 rows and 4 columns

• 3 rows and 4 columns

Tags

CCSS.HSA.REI.C.8

What should be entered into the matrix for each equation?

• The coefficients of the variables

• The constants

• The solutions

• The variables

Which function in Desmos is used to solve the matrix?

• Inverse function

• Transpose function

• Determinant function

• Row reduction echelon form function

What does the first row of the resulting matrix represent?

• The value of y

• The sum of all variables

• The value of z

• The value of x

Tags

CCSS.HSA.REI.C.9

If the second row of the resulting matrix is 0x + 1y + 0z = 5, what is the value of y?

• 0

• 10

• 1

• 5

Tags

CCSS.HSA.REI.C.9

What does the last row of the resulting matrix tell us?

• The value of x

• The value of y

• The value of z

• The sum of x and y

Tags

CCSS.HSA.REI.C.9

If the resulting matrix shows 0x + 0y + 1z = -2, what is the value of z?

• 2

• -2

• 0

• 1

Tags

CCSS.HSA.REI.C.9