The depth of a lake, d, varies directly with r, the amount of rainfall last month. if k is the constant of variation, write an equation to represent the situation.
Explanation: We know that the depth (d) varies directly with the amount of rain (r). This means that as the amount of rain increases, the depth increases and vice-versa. The depth would depend on r multiplied by a constant of variation (k)
Translating this into equation, we would get the following: d = kr
