Response:
Step-by-step explanation:
We need to form an equation that illustrates the area that Felicia has covered, denoted as y, in relation to the number of tiles she utilized, represented by x.
Let x= Number of tiles
y=Area occupied by Felicia's tiles





The relationship between x and y is constant. Hence, it follows a direct proportion.
The equation for direct proportion is shown as

Where
k=The value of the ratio of x and y
x and y are variable factors
Here, we have k=9
Substituting the known values into the equation
leads us to



This represents the necessary equation depicting the area Felicia covered, y, in terms of the number of tiles utilized, x.