Obtain the equation of straight line in the form of (x/a)+(y/b)=1 where symbols have their usual meanings. plz

Plz help plz give me the answer

Which inequality has a dashed boundary line when graphed ?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?