Maths-
General
Easy

Question

What is the graph of f(x table attributes columnspacing 1em end attributes row cell 9 x squared minus 25 end cell row cell x squared minus 5 x minus 6 end cell end table

hintHint:

A rational function is a function that is the ratio of polynomials. Any function of one variable, x, is called a rational function if, it can be represented as f(x) = p(x)/q(x), where p(x) and q(x) are polynomials such that q(x) ≠ 0.
Rational functions are of the form y=f(x)y = f x , where f(x)f x is a rational expression .

The correct answer is: The vertical asymptote of the rational function is x=−1 and x= 6 . This function has the x -intercept at (1.667,0) and y -intercept at (0,1) . We will find more points on the function and graph the function.


    1. Find the asymptotes of the rational function, if any.
    2. Draw the asymptotes as dotted lines.
    3. Find the x -intercept (s) and y -intercept of the rational function, if any.
    4. Find the values of y for several different values of x .
    5. Plot the points and draw a smooth curve to connect the points. Make sure that the graph does not cross the vertical asymptotes.
    The vertical asymptote of a rational function is x -value where the denominator of the function is zero. Equate the denominator to zero and find the value of x .

    x2 - 5x - 6 = 0
    x2 - 6x + 1x - 6 = 0
    x(x - 6) + 1 (x - 6) = 0
    (x - 6) (x + 1) = 0
    x – 6 = 0   or    x + 1 = 0
    x = 6   or   x = -1
    The vertical asymptote of the rational function is x=−1 and x= 6  .
    This function has the x -intercept at (1.667,0) and y -intercept at (0,1) . We will find more points on the function and graph the function.

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