(1 point) Consider the contour diagram for z = f(x, y) shown below. Note: you can...

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(1 point) Consider the contour diagram for z = f(x, y) shown below. Note: you can click on the graph for a larger view. Determine whether the following values related to f(x, y) at the point P are positive, negative, or zero. f(x, y): Positive f(x,y): Positive fy(x, y): Positive f(x, y): Positive f(x, y): Positive fry(x, y): Positive Note: You can earn partial credit on this problem. (1 point) Consider the contour diagram for z = f(x, y) shown below. Note: you can click on the graph for a larger view. Determine whether the following values related to f(x, y) at the point P are positive, negative, or zero. f(x, y): Positive f(x,y): Positive fy(x, y): Positive f(x, y): Positive f(x, y): Positive fry(x, y): Positive Note: You can earn partial credit on this problem.