唔識計...
Find the equation of the line passing through ( 6, -2 ) and
making equal intercepts on the coordinate axes.
A-math
2007-05-22 3:38 am
回答 (2)
2007-05-22 3:44 am
✔ 最佳答案
let the x- intercept and y- intercept be ( a,0) and ( 0,a)The equation will therefore be
(0-a) / (a-0) = (y-(-2) ) / (x-2)
After solving you will get:
-x+2=y+2
in general form it will be
x+y=0
參考: myself
2007-05-22 3:52 am
let m be the slope of required eqt.
y + 2 = m(x - 6) ---------------- (1)
y-intercept = -6m - 2
x-intercept = 2/m + 6
-6m - 2 = 2/m + 6
simply,
m = -1 or m = -1/3
代返入 (1), 掂
y + 2 = m(x - 6) ---------------- (1)
y-intercept = -6m - 2
x-intercept = 2/m + 6
-6m - 2 = 2/m + 6
simply,
m = -1 or m = -1/3
代返入 (1), 掂
收錄日期: 2021-04-12 21:26:31
原文連結 [永久失效]:
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