Math Is Fun Forum

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=8

Dross

Member

Registered: 2006-08-24

Posts: 325

Re: 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=8

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.

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Bad speling makes me [sic]

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!

13kayduz

Member

Registered: 2007-10-05

Posts: 10

Re: 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=8

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 13kayduz

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

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"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..."