Hey! Random points, how was your day??

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.

What term best describes a line ans a point that lie in the same plane

Find solution of the linear equation y = 2/3x + 1/3