heat flows normal to isotherms, curves along which the tempature is constant. find the line along which heat flows through the point (2,5) when the isotherm is along the graph 2+y=33. what is the equation of the line along which heat flows is y=

Heat flows normal to isotherms, curves along which the temperature is constant. Find the line along which heal flows through the point (2,5) when the isotherm is along the graph of 2x ty = 33 The equation of the line along which heat flows is y =