ractice Worksheet -Group B Unit 8 Differential Equations Std: FUN 7 LEVEL 1 LaICulus Name: Write a differential equation that describes each relationship. If necessary, use k as the constant of proportionality. 1. The rate of change of Y with respect to w is directly 2. The rate of change of S with respect to y is proportional to the square of x. proportional to the square root of u and inversely proportional to v