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concept
Generally, the form
function pattern, referred to反比例函数, wherein x is自变量, y is函数.
Image inverse function
Once the image is a straight line function, a quadratic function of the image is a parabola, the image inverse function for example as follows:
Law image found as follows:
When k> 0, the image is at a third quadrants; k <0, the image is located in second and fourth quadrants.
When k> 0, the within one quadrant, y decreases with increasing x.
When k <0, in a quadrant, y increases with increasing x.
Image inverse function composed by two curves, it is hyperbolic.
The other half, the inverse proportion function both symmetrical about the y = x, and symmetrical about the y = -x.
