1 and "k" are often used to indicate the slope of a straight line in a linear function.
2. "K" often represents a constant in mathematics, that is, the slope of the function image.
3. In physics, "k" may represent bulk elastic modulus, absolute zero (-273,438+06℃), Boltzmann constant or Hooke's law spring constant, etc.
4. In addition, "K" may also be used as a symbol of other meaning, such as Kelvin (Thermodynamic Degree-Day), or as a prefix of counting units in certain cases.