My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
January 24th, 2012, 08:48 PM   #1
Newbie
 
Joined: Jan 2012

Posts: 21
Thanks: 0

straight line problem

1/r+1/m=1/c
r,m are variables
c is a constant
show that x/r+y/m=1 is going through a constant point
shalikadm is offline  
 
January 24th, 2012, 09:21 PM   #2
Senior Member
 
MarkFL's Avatar
 
Joined: Jul 2010
From: St. Augustine, FL., U.S.A.'s oldest city

Posts: 12,204
Thanks: 511

Math Focus: Calculus/ODEs
Re: straight line problem

We are given the family of lines:

where with c a non-zero constant.

If this family of lines all pass through the same point, let's call this point (h,k). We should then be able to express the family of lines in the form:

where is an arbitrary slope.



























So we find all the lines pass through the point (c,c).
MarkFL is offline  
January 24th, 2012, 10:46 PM   #3
Newbie
 
Joined: Jan 2012

Posts: 21
Thanks: 0

Re: straight line problem

thanks a lot...this site seems good. :P
shalikadm is offline  
January 24th, 2012, 10:48 PM   #4
Senior Member
 
MarkFL's Avatar
 
Joined: Jul 2010
From: St. Augustine, FL., U.S.A.'s oldest city

Posts: 12,204
Thanks: 511

Math Focus: Calculus/ODEs
Re: straight line problem

Glad to help, and welcome to the forum!

I'm glad you like this forum!
MarkFL is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
line, problem, straight



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Straight line graphs poochie03 Algebra 3 November 5th, 2011 12:00 PM
straight line outsos Algebra 7 December 23rd, 2010 07:15 PM
another straight line question Kiranpreet Algebra 3 August 10th, 2008 07:45 AM
straight line Q Kiranpreet Algebra 2 August 9th, 2008 09:29 AM
Particle Moving on a Straight line... djzero3 Real Analysis 3 October 5th, 2007 04:10 AM





Copyright © 2018 My Math Forum. All rights reserved.