Linear Equations and Algebra Tiles

Match the value for y with the graph.

Hint: make a chart for each equation to find its coordinates.

• 2x + 1

• 2x - 1

• 2x + 2

• 2x + 3

The equation x = 7 in two variables can be written as ____

• x + 1 .y = 7

• x + 0.y = 7

• 0.x + 1. y = 7

• 0.x + 0.y = 7

The equation x = 7, in two variables, can be written as

• x + 1. y = 7

• X + 0. y = 7

• x + 1. y = 7

• x + 0. Y = 7

What is the highlighted section?

• Equal sign

• Coefficients

• Constants

• Ones

• Zeros

Write the matrix that corresponds to the system

• A

• B

• C

• D

Write the augmented matrix that corresponds to the system

• A

• B

• C

• D

State the dimensions of the augmented matrix for the system. (Rows by Columns)

• 2 x 3

• 3 x 2

• 3 x 4

• 4 x 3

Write the system that corresponds to the augmented matrix.

• A

• B

• C

• D

What is a
Coefficient Matrix?

• A matrix that contains only the coefficients of a system of equations.

• A square matrix that, when multiplied by another matrix, equals that same matrix. If A is any n X n matrix and I is the n X n identity matrix, then A ⋅ I = A and I ⋅ A  =  A.

• Two n X n matrices whose product is the identity matrix.

• A matrix that contains the constants of a system.

Solve this equation

a - 2.1 = 5.8

• a = 7.9

• a = 3.7

• a = 5.8

• None of these match my answer