G f(1,1) f(-1,1)Given contour map of z = f(x, y), sketch the gradient vectors (with approximate length and direction): ∇f(1, 1), ∇f(1, −1), ∇f(−1, 1), and ∇f(−1, −1). Describe, how you choose the direction and the length of the gradient vector in each case.

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

27 is what percent of 108? 27 is % of 108

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?