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First Chapter of Text: distance formula with unknowns (13x,23x) (6x,x) x>0 
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#1
Jan813, 06:20 PM

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1. The problem statement, all variables and given/known data
Find the distance between P and Q P(13x,23x), Q(6x,6), x>0 *This came from Chapter 1 Linear Functions, Equations, and inequalities Section 1.1 Real Numbers and the Rectangular coordinate System of A Graphical Approach to Precalculus with Limits by Hornsby et al 2. Relevant equations distance formula d(P,Q) = √(x_{1}x_{2})^{2}+(y_{1}y_{2})^{2} 3. The attempt at a solution I mostly need to what this so I can put a query into google. It looks like something to do with the equations of the lines of the triangle like line P is (mx,bx) and line Q is (mx,bx) but I really have no idea...graphical transformations or something? 


#2
Jan813, 06:23 PM

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#3
Jan813, 07:16 PM

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#4
Jan913, 09:22 AM

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First Chapter of Text: distance formula with unknowns (13x,23x) (6x,x) x>0
The reason I don't want to work the problem is because not much is mentioned about the problem in my text because it is precalculus and not remedial algebra. When I 'google' something I'm trying to find articles or explinations containing details such as: P(13x, 23x), Q(6x,x) Where instead of just plugging some numbers like 12, 23 and 6,1 I have some variables in with my coordinates...I am starting to think this is a simplification problem...nothing to do with changing the locations of points...after all it is the first section of my precalculus text. I think I am going to get the student solutions manual for this text. A book that will work out the problems for me and turn a light on when I want to google things. Thanks. 


#5
Jan913, 09:35 AM

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You have the distance formula. Just plug the coordinates of the points into this formula to get the distance. After this, simplify the result as much as possible. You should not be wasting your time trying to find something by a web search. 


#6
Jan913, 10:59 AM

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#7
Jan913, 04:30 PM

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It appears as though there are people here with more important precalculus homework problems and I should take my question to a remidial algebra forum somewhere else on the internet. Mark44 and Ray Vickson, instead of telling me to 'just work the problem' why don't you 'just' tell me my question is innappropriate. Just because I am looking for hits on google, instructor solutions, or talking to you on the internet doesn't mean I'm in a hurry.



#8
Jan913, 04:36 PM

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#9
Jan913, 06:13 PM

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Here at Physics Forums, we operate under the philosophy that students learn best by doing the bulk of the work themselves, NOT by seeing the answers. 


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