Answer: 5
Explanation:
The constant of proportionality is 5 because here is the formula for this sort of question.
y=kx The k is the constant of proportionality and we can substitute the k for 5.
Ok, maybe that wasn't very helpful but the simplest way to know is this.
The 5 is the constant of proportionality because the constant of proportionality is the same thing as the slope (hopefully you know what slope is). The slope is the rate of change.
C is the y because the number of cones DEPENDS on the number of minutes (the number of minutes is X). The number of cones change by each minute.
Example:
c=5(3)
c=15 (15 cones)
or
10=5x
10/5=5x/5
2=x
Just use substitution.
Okay sorry if this was confusing, I just am not good at explaining this even though I know what it is.
Simple answer: It's 5