Unit 6 Self - Quiz

Press true  for True  and  false  for False.

1. A matrix of order 3 X 2 has two rows and three columns.:  

   

2.  2x - 3y = 12
      x + y = 16

The augmented matrix for the given system of linear equations is

2 - 3 |12

1   1 | 16

     

3)

    x = -3          
     

4)

               

5) It is possible to multiply a  matrix with dimensions 2x6 with a matrix of dimensions 6X4.

               

6) Given

              

7) For any 3 x 3 matrices, A and B, AB always equals BA.

              

8) Only square matrices have inverses.

            

9)

                 

10)  Use an inverse matrix to solve the system of linear equations.  X = A-1 C

x + y + z  = 5
2x - y + z = 1
-x + y + 3z = 1
x = 2, y = 3, z = 0

                 

©: Joan Bookbinder 1999