1 (a) Find the equation of the straight line L which passes through (2,4) and (1,5)
(b) does L pass through (7,-1)?
find equation in straight line
2014-01-24 4:31 am
回答 (1)
2014-01-24 4:46 am
✔ 最佳答案
1.a)(y-5)/(x-1) = (4-5)/(2-1) = -1/1 = -1
y-5 = (-1)(x-1)
y-5 = -x+1
x+y-6 = 0
b)
Put (7,-1) into the equation
value of 7+(-1)-6 = 0
(7,-1)satisfy the equation. therefore, L pass through (7,-1)
2014-01-23 20:49:10 補充：
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收錄日期: 2021-04-27 20:36:02
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https://hk.answers.yahoo.com/question/index?qid=20140123000051KK00203