
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 15th, 2013, 04:32 AM  #1 
Senior Member Joined: Sep 2011 Posts: 395 Thanks: 0  The Equation of Line
My final answer matches that of the text book, but can anyone confirm if the 1st part of my answer is sufficient or do I need to prove L = 1 mathematically? Many thanks. Q. The line L cuts equal intercepts from the xaxis & yaxis as shown (see attachment). Find the equation of L if (1, 3) L. Attempt: Because the intercepts are equal, the slope of L = 1. Thus, 
September 15th, 2013, 07:22 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,746 Thanks: 2133 
The question's wording is poor. The intercepts shown are equal in magnitude, but not in sign. If they were equal in magnitude and sign, the slope of the line would be 1. Strictly speaking, therefore, your answer should have started "Because the intercepts are equal in magnitude and opposite in sign" (or equivalent wording).

September 15th, 2013, 10:04 AM  #3 
Senior Member Joined: Sep 2011 Posts: 395 Thanks: 0  Re: The Equation of Line
Ok, thank you.


Tags 
equation, line 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Find the equation of the line through P that cuts the line?  luketapis  Algebra  1  November 23rd, 2011 03:19 PM 
Equation of a line  Zilee  Physics  1  November 17th, 2011 01:35 PM 
Equation of the line of best fit  atlkid1  Algebra  3  June 15th, 2010 10:32 AM 
equation of the line  amirus14  Calculus  1  December 31st, 1969 04:00 PM 
equation of the line  amirus14  Calculus  1  December 31st, 1969 04:00 PM 