SOLUTION: find the b such that the vertex of parabola y² + 2y - bx -3 =0 passes through (-6,3)''.

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: find the b such that the vertex of parabola y² + 2y - bx -3 =0 passes through (-6,3)''.      Log On


   

Question 1106928: find the b such that the vertex of parabola y² + 2y
- bx -3 =0 passes through (-6,3)''.
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
Not every set of words is formulation of a mathematical problem.

This set of words is definitely not.


================
Dear @greenestamps,

        the post says (word in word) 

        "the vertex of parabola y² + 2y- bx -3 =0 passes through (-6,3)"

        which is nonsense, or, at least, incorrect/nonsensical usage of terms.



Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


I'm not sure why the other tutor had difficulty understanding your question....

If the graph of y%5E2%2B2y-bx-3=0 passes through the point (-6,3), then the values x=-6 and y=3 must satisfy the equation. So

3%5E2%2B2%283%29-b%28-6%29-3+=+0
9%2B6%2B6b-3+=+0
12%2B6b+=+0
12+=+-6b
-2+=+b

---------------------------------------
dear ikleyn --
I often chuckle at some of the things you say in your responses to questions. But I know that English is not your first language, and I am able to understand what you mean.

Questions we get are usually from people who are not completely familiar with the mathematical vocabulary, so we should be able to understand what they are asking, even if the words do not say exactly what they were intended to.

Furthermore, it is very likely that some of the questions we get are from people for whom English is not their first language, so we should be tolerant of wording of questions that is not perfect.

If your use of English is not perfect, you should not expect perfect language from people who are asking for our help.