answer: a 13 units. its 13 units bc 13+3=16 soooooooooooo yeahhhhhhhh
You have to use this sign <
Answer:
The constant of proportionality is 3.50.
Step-by-step explanation:
We know that when y directly varies with x, such that

The number 'k' is called the constant of proportionality.
Given the equation

as

so
∵ 
Here the value of k = 3.50, which is the constant of proportionality.
Therefore, the constant of proportionality is 3.50.