Find the constant of proportionality k. then write an equation for therelationship between xandy(example 2)2. x8 16y 10 2030 40essential question check-in4. how can you represent a proportional relationship using an equation? 20 nit 92432

2) y= x times 5
The constant proportion is k=5

3) y=x times 4
The constant proportion is k=4

4)If total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.