I'm assuming you're subtracting. It would be 3.9. The second one would be 0.65.
Y = 2x - 8
I used a graphing calculator to figure it out.
Answer:
5
Step-by-step explanation:
The matrix is in the form
a b
c d
The determinant is
ad -bc
2 *4 - 1 *3
8 - 3
5
No, because it is missing a 5 there has to be the same form to be equal if not it won’t be equivalent