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#1 2007-10-08 11:27:52

roger
Guest

algebra 2

write an equation in standard form that:

1)   passes though (7,2) and parallel to x+y=6




and



2)  passes through (1,9) and is perpendicular to 2x-5y=8swear

#2 2007-10-09 03:36:52

Dross
Member
Registered: 2006-08-24
Posts: 325

Re: algebra 2

roger wrote:

write an equation in standard form that:

1)   passes though (7,2) and parallel to x+y=6




and



2)  passes through (1,9) and is perpendicular to 2x-5y=8swear

Have you made any attempt at these questions? How far have you got?

Both of these need to be in the form y = mx + c (or whatever symbols you're using for "gradient" and "y-intersection" - m and c are what I'm using, respectively).

So here are two further sub-questions that will get you started on the first question:

i) What is the gradient (m in the equation above) of the first line?

If you can answer this, you'll have the m in the equation. Then:

ii) What does c have to be so that y = 2 when x = 7?

Get back with any thoughts/answers/guesses (:P) you have for these.


Bad speling makes me [sic]

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#3 2007-10-09 11:31:37

13kayduz
Member
Registered: 2007-10-05
Posts: 10

Re: algebra 2

I am the smallest 5-digit even number you can make.
  I can only us the following numbers (123456789) But there are only 4 eve numbers, i need hep fast! yikes

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#4 2007-10-09 11:38:02

13kayduz
Member
Registered: 2007-10-05
Posts: 10

Re: algebra 2

Dross wrote:
roger wrote:

write an equation in standard form that:

1)   passes though (7,2) and parallel to x+y=6




and



2)  passes through (1,9) and is perpendicular to 2x-5y=8swear

Have you made any attempt at these questions? How far have you got?

Both of these need to be in the form y = mx + c (or whatever symbols you're using for "gradient" and "y-intersection" - m and c are what I'm using, respectively).

So here are two further sub-questions that will get you started on the first question:

i) What is the gradient (m in the equation above) of the first line?

If you can answer this, you'll have the m in the equation. Then:

ii) What does c have to be so that y = 2 when x = 7?

Get back with any thoughts/answers/guesses (:P) you have for these.

can you plese help me,im a fith grader whom needs help 13kayduzrolleyes

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#5 2007-10-09 11:58:21

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

Re: algebra 2

Using each digit at most once: 12346
Using each digit as many times as you want: 11112


"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

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