Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Could anyone explain me how to do tasks like this one:

Plane is intersecting Oy axis when $y = 3$ and line equation is $ 2x + 4= y-2=z$ belonds to plane.

Write plane equation.

share|improve this question
    
I edited your question. Check if it's correct or not? ($2x+4+y−2=z$) –  Zia Jan 24 at 9:37
    
Thanks for the correction,maybe you could help me with the problem now ? :) –  Laury Jan 24 at 9:46
    
Is that your homework or what? Have you learn it yet? –  Zia Jan 24 at 9:49
1  
@Zia I think that you are wrong.It is the symmetric equations of the line. –  nadia-liza Jan 24 at 9:49
    
It's not a homework, more then practise I need to understand in my course work. I have been given a canonical line form. Not sure how to use it to find plane as I described above. –  Laury Jan 24 at 9:50
show 1 more comment

1 Answer

up vote 0 down vote accepted

find 3 points which belong to plane. The first is $(0,3,0)$. if a line belongs to plane then all its points belong to plane. Since points $(-2,2,0)$ and $(2,10,8)$ belong to the line $ 2x + 4= y-2=z$ . We have the 3 points which belong to the plane. Formula on http://en.wikipedia.org/wiki/Plane_(geometry) (Defining a plane through three points) helps you write plane equation.

I am sorry for my English

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.