Give an equation with a vertical asymptote of 0 and a slant asymptote of -x

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giorgiana1976 | College Teacher | (Level 3) Valedictorian

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The equation of the slant asymptote is put in the standard form and it is written as:

y = mx + n, where m is the slope of the asymptote and n is the y intercept.

The equation of the slant asymptote is:

y = -x

m = -1 and n = 0

The equation y = -x is the equation of the bisectrix of the 2nd or the 4th quadrant.

So, the slant asymptote y = -x is the bisectrix of the 2nd or the 4th quadrant.

If the vertical asymptote of a function is x = 0 that means that the function is discontinuous in the point that has the x coordinate x = 0.

The domain of definition of the function that has the vertical asymptote x = 0 does not contain the value x = 0.

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neela | High School Teacher | (Level 3) Valedictorian

Posted on

To give an example of a function whose vertical asymptote is 1/x and the obleque asymptote is y = x.

We know that an asymptote is a line or a curve to which  a function approach as x --> infinity (or in limit).

We know that y = 1/x - x is an example.

We discuss below how this is possible.

As x--> infinity y = 1/x-x  approaches y = -x , as 1/x approaches zero.

As x --> 0, y = 1/x -x approaches  y = 1/x which becomes unbounded.

So x= 0 is the vertical asymptote and y = -x is the oblique asymptote.

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