Quick Question about Gradient Vector Problem

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I'm studying for a final exam and reviewing some past exams and just have a small question about this problem.

Part 1 : You are standing at the point $(1,1)$ on a hill whose surface is given by the question $$ z = 5y - x^2 - 2y^2 $$ If you climb in the direction of the steepest ascent what is your rate of ascent with respect to the horizontal distance as you start?

I understood this. You find the gradient vector and then the magnitude of the gradient vector and get the answer

$$\sqrt{5}$$

Part 2: If you decide to go southeast from the point $(1,1)$ on the hill, would you be ascending or descending? At what rate?

You would be descending because your going in a direction away from the gradient vector which points in the direction of the greatest rate of change.

For the rate you would you take the magnitude of $$ 1i -1j $$

$$\sqrt{2}$$

I'm not sure if those was incorrectly marked wrong on my old exam?