A solution to a system of equations is a set of values for the variable that satisfy all the equations simultaneously. In order to solve a system of equations, one must find all the sets of values of the variables that constitutes solutions of the system.
Answer:
The 3rd answer is correct!
Step-by-step explanation:
Answer:
Yes, "y" varies directly with "x".
The equation is: 
Step-by-step explanation:
By definition, Direct variation equations have the following form:

Where "k" is the Constant of variation.
If you solve for "k", the equation is:

Then, given the table provided in the exercise, you can know if "y" varies directly with "x" by finding the quotient of the correspoding values of "x" and "y":
- Dividing
by
you get:

- Divide
by
:

- Dividing
by
:

Since the quotient is constant, then "y" varies directly with "x" and the the Constant of variation is:

Therefore, the equation for the Direct variation is:

Since their are 128 FL OZ in a gallon in a gallon do 10 times 60 (Mins in an hour) you get 60/128 an hour or you can divide to make a decimal and get 0.46875