A.Maths Straight line question!!

A line makes intercept h on the x-axis and intercept k on the y-axis. The line passes through (1,2). Express h in term of k.

Answer; h= k/(k-2)

更新:

If i don't want to use intercept form, wt can i do ??

1 個解答

評分
  • 1 十年前
    最愛解答

    By intercept form of straight line,

    the equation of straight line is

    x/h+y/k=1

    Put x=1, y=2

    1/h+2/k=1

    1/h=1-2/k=(k-2)/k

    h=k/(k-2) (ANS)

    2006-12-11 00:16:34 補充:

    ===ALTERNATE SOLUTION===Let the equation of straight line bey=mx k (since y-intercept=k)Put x=1, y=22=m k   --(1) Put x=h, y=00=mh k   -(2)Eliminate m from (1) and (2),0=(2-k)h kh=k/(k-2) (ANS)

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