(2.5, 2.5) and (2, 0)
But you knew that already
sorry
Start with the given equation:

Substitute known values:

Evaluate:

Similarly:


That was said oddly. From what I understand, she would need to buy 64 feet of fabric.
Answer:
A dependent variable is a variable (often denoted by y ) whose value depends on that of another. so it is the variable that changes depending on the numbers beside it.
I hope this helps if not check out Khan academy
https://www.khanacademy.org/math/algebra/introduction-to-algebra/alg1-dependent-independent/v/dependent-and-independent-variables-exercise-example-3