Answer:
Option C) [tex]\displaystyle\frac{y}{x}[/tex]
Step-by-step explanation:
Proportional relationship:
- Proportional relationships are relationships between two variables where their ratios are equivalent.
- In a proportional relationship, one variable is always a constant value times the other.
- [tex]y \propto x\\y = ax\\\\\displaystyle\frac{y}{x} = a[/tex]
Thus, from a proportional graph, constant rate of change can be calculated with the help of ratio of y and x.
Option C) [tex]\frac{y}{x}[/tex]
can be used to calculate constant rate of change,
