The corners of a triangle are (2,1), (4,4), and (6,2). which system of inequalities describes the interior of the triangle?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

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?