Question: Figure 8.24 shows contours for the function z = f(x, y). Is z an increasing or a decreasing function of x? Is z an increasing

Figure 8.24 shows contours for the function z = f(x, y). Is z an increasing or a decreasing function of x? Is z an increasing or a decreasing function of y?

5 3 2 1 y 1 10 9 8 7 6 4

5 3 2 1 y 1 10 9 8 7 6 4 321 2 3 4 5 6 Figure 8.24 X

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