How do you determine the order of the matrix #[(33, 45), (-9,20)]#? Precalculus Matrix Algebra Determinant of a Square Matrix 1 Answer sjc Feb 25, 2017 #2xx2# Explanation: #"the order of as matrix tells us how many rows and columns it has"# #"the order is written as " mxxn# #" where "m="the number of rows; "# #color(white)(xxxxxxx)n=" the number of columns"# In this case we have #2 " rows "2" columns"# #"so the order is: "2xx2# Answer link Related questions What is the determinant of an inverse matrix? What is the determinant of a matrix used for? What is the determinant of a matrix to a power? What is meant by the determinant of a matrix? How do I find the determinant of a #2xx2# matrix? How do I find the determinant of a #3xx3# matrix? How do I find the determinant of of a #4xx4# matrix? How do I find the determinant of of a #5xx5# matrix? Does every matrix have a determinant? What is the cofactor expansion method to finding the determinant? See all questions in Determinant of a Square Matrix Impact of this question 1560 views around the world You can reuse this answer Creative Commons License