Answer:
![(1,K)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tspfok2ps4s0lf6a5u0g5j3ao1baz14l85.png)
Explanation:
According to the problem, the mixture must contain K ounces of oil for every gallon of gasoline. That is, each gallon of gasoline equals K ounces, this can be expressed as
![(1,K)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tspfok2ps4s0lf6a5u0g5j3ao1baz14l85.png)
Where
expresses each gallon of gasoline and
represents ounces of oil.
Therefore, the coordinate on the graph must represent
, that is, K ounces of oil per gallon of gasoline.