What is the er of a cooling system that uses 500 watts of electricity to move 6000 btus per hour at 95 degrees fahrenheit

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?

How is this equation completed? i cannot find any examples in the book.