The origin goes back to the Latin verb ‘Oboedire’ which means to serve.
When they are different temperatures and are in contact.
Google translate helps with translating things.
To find the equation of the next line we are going to find the negative inverse of the gradient 0.5.
0.5 is the same thing as saying a 1/2 and the negative inverse of 1/2 is -2.
Therefore the equation of the other line is y = -2x - 1