The image of inverse scale function y = KX passes through point a (- 2,3); (1) find the analytic expression of this function; (2) judge whether point B (1,6) is on the image of this inverse scale function, and explain the reason

The image of inverse scale function y = KX passes through point a (- 2,3); (1) find the analytic expression of this function; (2) judge whether point B (1,6) is on the image of this inverse scale function, and explain the reason

(1) ∵ the image of the inverse scale function y = KX passes through the point a (- 2,3), ∵ k = xy = (- 2) × 3 = - 6, ∵ the analytic expression of the function is y = - 6x; (2) the point B (1,6) is not on the image of the inverse scale function for the following reasons: from (1), k = - 6. ∵ 1 × 6 = 6 ≠ - 6, ∵ the point B (1,6) is not on the image of the inverse scale function