Line de contains the points d(-1,-4) and e (3,3). line fg contains the point f (-3,3).which set of coordinates for point g makes the two lines perpendicular

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?