Unit 3.7 Assignment

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

What comes first in the order?

• Row
• Column

What are the dimensions of this matrix?

• 3x1
• 1x3
• 3x3
• 1x1

In Matrix R (pictured) what element is in the second row, third column?

• 8
• 9.01
• 6
• 1

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Solve for the determinant of the following matrix:  
⌈12  −3⌉
⌊−6  15⌋
*detA= ad-bc

• 198
• 162
• -333
• -9

Calculate the determinant

• 0
• none
• -32
• -8

Find the solution to the system
x − y = 3
7x − y = −3

• (4,1)
• (-1,-4)
• (-1,-1)
• vanilla

Systems of 3 Equations:
-x+6y-z=6
2x+y-3z=16
-x+5y+3z=-7

• A (0, -6, 0)
• B (0, 0, -6)
• C (3, 1, -3)
• D (-6, 4, -3)