Help please This is really hard

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

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Measure a and b and find their sum. how are the angles related?