As shown in the figure, the image of the first-order function y = KX + 2 and the inverse scale function y = K / X intersects a (4, m)

This is very simple! The point of intersection (4, m) must be on the graph of first-order function, so, 4K + 2 = M. in addition, this point is also on the graph of inverse scale function, so, M = K / 4, two simultaneous equations can be solved, M = - 2 / 15

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1. If the inverse scale function y = K / X intersects with the image of the first-order function y = KX + 2, then the value range of K is Such as the title
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