Hi can anyone me answer this question on proportional relationships

How do i do this using elimination 2x+3y=12 x-y=6

Which of the following graphs represents the function f(x) = 2^x

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