The graph shows a proportional relationship between x and y. find the constant of proportionality (r) and write an equation to represent the relationship.

r=3

Step-by-step explanation:

We are given that a graph.

The graph shows  a proportional relationship between x and y.

From given graph  we can see that when x increases then y is also increases.

Therefore,

Where r=proportionality constant

x=5 and y=15

Substitute the values then we get

Substitute the value of r

Then, the equation to represent the relationship is given by

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

f(x) = y

f(-3) = -5

step-by-step explanation: