Question

parking for 4 hours cost $10 parking for 5 hours cost $12 .Is this a proportional relationship and if so what is the constant of the proportionally

Answer 1

Answer:

It is not a proportional relationship

Explanations:

Note that:

for a proportional relationship, there is always a constant of proportionality

A proportional relationship is of the form

y = kx

Let the cost be y

Let the number of hours be x

If k is the same for x = 4 hours, y = $10 and x = 5 hours, y = $12, then the relationship is proportional

For x = 4, y = 10:

y = kx

10 = 4k

k = 10/4

k = 2.5

For x = 5, y = 12

y = kx

12 = 5k

k = 12/5

k = 2.4

Since k is not constant (not the same) for both cases, the relationship is not proportional