Question

the unruly queens chess club is hosting a tournament, and each club member is bringing something to eat or drink. mia decides to bring oatmeal raisin cookies from her favorite bakery. there is a proportional relationship between the number of oatmeal raisin cookies mia buys, x, and their total cost (in dollars), y. what is the constant of proportionality? write your answer as a whole number or decimal. dollars per cookie

Explanation:

Step1: Recall the formula for constant of proportionality

For a proportional relationship $y = kx$, $k$ is the constant of proportionality, and it can be found by $\frac{y}{x}$.

Step2: Select a point on the graph

Let's take the point $(2,2)$ (we can choose any point on the line). Here $x = 2$ (number of cookies) and $y=2$ (total cost in dollars).

Step3: Calculate the constant of proportionality

$k=\frac{y}{x}=\frac{2}{2}=1$

Answer:

1