3. Matrix Methods for Systems

Matrix Notation — Quiz

Test your understanding of matrix notation with 5 practice questions.

Practice Questions

Question 1

Which statement best describes a matrix?

Question 2

For the matrix $A=\begin{bmatrix}2 & 5\\0 & -3\\1 & 4\end{bmatrix}$, what is the entry in row $2$, column $2$?

Question 3

What is the size of a matrix with $3$ rows and $2$ columns?

Question 4

For the system $2x+y=5$ and $x-3y=7$, which matrix is the coefficient matrix?

Question 5

If a matrix has $m$ rows and $n$ columns, how many entries does it have?