la) Find the level curve of the function Ax, y) = 4+ 2x + 3y where k = 10 b) Graph this "curve" in an xy-plane.2) Can two different level curves (of the same function) cross? Why or why not? 3) The x-axis points upward on a page. The y-axis points to the right. Which way does the z-axis point? 4) Find the first partial derivatives of: Ax, y) = x2 . In(x + y)