At the farmers market, you can buy 3 melons for $10.50, 6 melons for $21, or 9 melons for $ 31.50. what is the constant of proportionality?

The total price of the melons is proportional to the number of melons.

Hence,

, where is a constant of proportionality, number of melons and is the price.

From the given data,

From the above equations, we can see that the constant of proportionality is .

step-by-step explanation:

the shape,the size and the distance

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point