Answer:
the marked answer is correct
Step-by-step explanation:
The desired end result is an identity matrix in the first three columns. The diagonal values are 1, as needed, so what remains is to eliminate the off-diagonal values. In row 2 that can be done by adding row 3 to it.
The next step should be to add rows 2 and 3 and replace row 2 with that sum.
The answer is 4
So the ratio would be 12/4
Then u simplify into 4/1 ( I divided each number by 4)
Answer:
C. Linear
Step-by-step explanation:
The function is going up by a constant rate of 4.
or 
