Help, please and thanks

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out