Algebra iiwhich is the correct statement?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.