Pigeonhole PollyTwin-Links · systems of equations

Keeps everything in rows and columns of pigeonholes: matrices.

Matrices

Matrices. In MathBound, the free Algebra I adventure game, Pigeonhole Polly asks these problems, and the only way past is to solve them.

Part of More topics: taught by some textbooks beyond the usual course.

10 questions, no sign-up, nothing saved. Climbs from the basics to harder questions.

What you will practice

Matrix Operations. Add or subtract two matrices.
Systems with Matrices. Write the augmented matrix of a 2x2 system, or the system of a matrix.

Made by the game’s own question engine. Try each one, then open its steps.

What

matrix

added

to

[2 - 2 - 9 8]

gives

the

zero

matrix?

Show the worked steps

Answer: $[- 2 2 9 - 8]$

Which

is

the

augmented

matrix

of

y = 5 x - 4

and

2 x - 4 y = 4 ?

Show the worked steps

Answer: $[- 5 2 1 - 4 - 4 4]$

Subtract : [5 - 5 - 4 2 - 2 4] - [12 - 3 - 9 2 - 2]

Show the worked steps

Answer: $[4 - 7 - 1 11 - 4 6]$

Textbook	Lessons
CPS Skyline Algebra	5.11H-5.12H
MVP Mathematics I (Integrated Math 1)	4.7, 4.8, 4.9, 5.11, 5.12, 8.5, 8.6, 8.8, 8.9, 8.10
Pearson Algebra 1 Common Core	12-1