Consider the plane 9x + 3y + z = 27. (a) Write down the point at which the given plane intersects the x-axis. (b) Write down the point at which the given plane intersects the y-axis. (c) Find an equation of the line of intersection of the given plane and the xy-plane.  d) Set up (but do not evaluate) an iterated triple integral of the form  dz dy dx that represents the volume of the solid enclosed by the given plane and the planes x = 0, y = 0, z = 0

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