Question

How do you calculate constant rate of change from a proportional graph given the

coordinates (x, y)?
a. xy

b. x/y

c. y/x

d. y+x​

Answer 1

y/x

Explanation:

i just took the quizz and it was right ;)

Answer 2

Option C)
`\displaystyle(y)/(x)`

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.
• 
  `y \propto x\\y = ax\\\\\displaystyle(y)/(x) = a`

Thus, from a proportional graph, constant rate of change can be calculated with the help of ratio of y and x.

Option C)
`(y)/(x)`

can be used to calculate constant rate of change,