What is the slope of line cd? 1/4 4/1 –1/4 –4/1 explain how to get the slope

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?

Math it's appreciated. (picture provided)

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school