Y equals 3X subtract two

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

How many grams the dog will eat in 3 days?

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.