You are walking on a surfacezfx, y), and for each unit that you walk in the you fall 6 units. Find the partial derivatives of x, y) you rise 4 units and for each unit that you walk in the y-direction ar ar Need Help? is of the form Rx, y) - ax+ by+c where a, b, and c are constants. Find the linear function of two variables following conditions. ã§-7, -7,and no. 0)-ã