2.4.2 Guided HW check

• (6, 2)

• (4, 8)

• (2,4)

• (3, 3)

Now create the coefficient matrix equation by dragging in the missing elements/entries

16 2 4 ​ (a)  

4 ​ (b)   ​2 1

​ ​ (c)   3 3 1

64 4 ​ (d)   1

• 1
• 6
• 2
• 9
• 8
• -16
• -9
• -36
• -4
• 3

Fill in the inverse of the coefficient matrix

-4/7 -3/14 ​ (a)   1/14

15/14 ​ (b)   -12/7 -1/14

85/14 31/14 -54/7 ​ (c)  

​ (d)   -48/7 160/7 9/7

• 5/7
• 12/7
• -7/5
• 14/85
• 4/7
• -4/7
• -114/7
• 114/7

Which is the correct matrix equation used to solve for the unknowns

• 
• 
• 
• 

When multiply the inverse of the coefficient matrix by the coefficient matrix you get the _ matrix

(a)  

Match the following values

• 600/7

• F

• -178/7

• B

• 17/7

• E

• -94/7

• D

Find the equation of the ellipse with all integer coefficients.

Mathematical Equivalence

ON