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Zikro
Lv 5
Zikro asked in Science & MathematicsMathematics · 1 decade ago

X and Y intercepts? (amongst other things)?

I'm given 6 equations and asked for the domain, the x and y intercepts and to sketch a graph to indicate asymptotes along with finding equations for the asymptotes. Help with a couple examples? I'll post all 6 equations but I'm not really expecting anyone to show them all. If you could explain the process in one or two, that would be great.

a) f(x) = (2x)/(x-1)

b) g(x) = (3x+2)/(2x-5)

c) h(x) = (x+1)/(x-2)

d) j(x) = (4x-12)/(x+8)

e) k(x) = (8x+16)/(5x-0.5)

f) m(x) = (9x+24)/(35x-100)

Update:

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2 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    Hint: x-intercept occurs where y = 0 and y-intercept occurs where x = 0.

    Ex.

    y-intercept

    f(0) = 0/(0 - 1) = 0

    x-intercept

    0 = 2x/(x - 1)

    2x = 0

    x = 0

    You try the rest by yourself. Also note that the domain must consist of values that work for certain function.

    I hope this helps!

    Source(s): Knowledge
  • 4 years ago

    The area would be each and all the plausible values for x. interior the 1st equation, x-a million is interior the denominator so we don't desire x - a million = 0 so as meaning x can not be equivalent to a million. So the area is {all actual numbers apart from a million} by potential of ways, you in basic terms got here upon an asymptote additionally. The equation for the asymptote is x = a million to discover the intercepts, only substitute 0 in for x and that grants the y intercept after which substitute 0 in for y and that grants the x intercept. So, to discover the y-intercept I resolve f(0) = (0)/(0-a million) = 0 this suggests that once x = 0, y = 0 so the graph crosses the x and y axis at (0,0) enable's communicate with regard to the graph. while x strategies the asymptote ( x = a million) what is going to take place to the y fee? (x - a million) is unfavourable while x < a million so f(x) would be unfavourable additionally while 0<x<a million. in view that (x-a million) is interior the denominator, as x strategies a million, (x - a million) will become on the fringe of 0 meaning the fraction (2x)/(x-a million) decreases to unfavourable infinity the closer x gets to a million. So the graph curves right down to infinity as x strategies a million. on the different component, x > a million so the equation (x - a million) is beneficial for this reason f(x) is beneficial for x>a million. It additionally strategies useful infinity as x strategies a million from the x>a million component. ok, you %. some greater factors for x > a million and graph them. Oh, one greater element, what takes place while x < 0? Now the numerator and the denominator are unfavourable so f(x) is beneficial returned. %. some factors for x< 0 and graph those too. thank you for the interesting difficulty, desire this enables. Have a blessed day.

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