Answer:
c. Its graph must have a slope of 11.
Explanation:
The slope refers to the inclination of the line, and different relations have different slope. In other words, not everything direct proportion has the same slope.
Remember that, a direct and inverse proportion is visualized as a linear function graph, which is a line, this line has an inclinations, and depending on the values of each variable (x and y), we will have a different slope, which is the ratio between those variables.
Therefore, the false statement is C.