difference equation
relationship between one or more independent variables, one or more dependent variables, and differences of those variables
en-GB/ˈdɪfɹəns ɪˈkweɪʒən/
en-US/ˈdɪfɚəns ɪˈkweɪʒən/
relationship between one or more independent variables, one or more dependent variables, and differences of those variables