Question

Check?

Answer 1

1. What is the set up for the coefficient determinant (D) in the following system?

2x + y = 2
3x + 4y = –7

2. What is the value for the coefficient determinant (D) in the following system?

4x – 3y = 16
3x + 7y = –25

3. What is the formula to find the value of y using Cramer’s Rule?

4. What situation will result in a final answer of “No Solutions” when using Cramer’s Rule?

5. What is the value of Dx in the following system?

4x – 3y = –14
2x + y = –2

6. What is the value of Dy in the following system?

x + 3y = –3
2x + 5y = –7

7. What is the solution to the following system using Cramer’s Rule?

2x + 2y = 14
x – 3y = –17

8. What is the solution to the following system using Cramer’s Rule?

3x – 6y = –1
5x + 3y = 7

Im posting my answers below:

Answer 2

1. |2 1|
|3 4|

2. 37

3. Dy/D

4. Unsure

5. 20

6. -1

7. (-1,6)

8. I'm working it out now

Answer 3

4.if the determinant of coefficient matrix is zero

Answer 4

None of the above
D, Dx and Dy will equal zero
Only D will equal zero
Only Dx and Dy will equal zero


c?

Answer 5

7... im unsure about

Answer 6

Ugh sorry..I am trying to remember all this >_< -reviewing lessons-

Answer 7

thanks for your time both of you

Answer 8

the four options are for Q 4?

Answer 9

yes

Answer 10

then c is the correct choice

Answer 11

the answer u posted for 7 is correct

Answer 12

These are my options for 7 though:

(6, 1)
(–1, –6)
(–6, –1)
(1, 6)