how do you model this situation with a linear function:

A market sells chicken for $2.99 a pound.

To model the situation with a linear function, we need to determine the relationship between the weight of the chicken and the cost.

Let's assume that the weight of the chicken is denoted by "x" in pounds and the cost is denoted by "y" in dollars.

We are given that the chicken sells for $2.99 a pound, which means that for every pound of chicken, the cost is $2.99. This suggests that there is a constant rate of change between the weight and the cost.

Hence, we can define the equation of the linear function as:
y = 2.99x

In this equation, "x" represents the weight of the chicken in pounds, and "y" represents the cost of the chicken in dollars.

By using this linear function, we can easily determine the cost of the chicken for a given weight. For example, if the weight of the chicken is 3 pounds, we can substitute that value into the equation:
Cost (y) = 2.99 * 3 = $8.97

Therefore, when the weight of the chicken is 3 pounds, the cost will be $8.97.