Find the slope of the lines joining each of the following pairs of points. 1. (3,-2) and (-4,7)
2. (-2,6) and (5,6)
3. (4,-1) and (4,3)
4. (1,7) and (4,2)

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?