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dydlf
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please please please help me! :( find the equation of the line passing through (1/2, 2) whose x int is one half of its y int
 2 years ago
 2 years ago
dydlf Group Title
please please please help me! :( find the equation of the line passing through (1/2, 2) whose x int is one half of its y int
 2 years ago
 2 years ago

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myko Group TitleBest ResponseYou've already chosen the best response.1
dw:1343132016563:dw slope m=2 so y+2=2(x1/2) y=2x1
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
hi! how were you able to get the x and y intercepts? :)
 2 years ago

myko Group TitleBest ResponseYou've already chosen the best response.1
the drawing is just an example of line that have this property that xint is half of yint. It doesn't go through the point (1/2, 2). It is just to visualize the problem and to notice that the slope of such a line is 2
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
ohhh 'cause my problem is actually finding out how to get the equation of that line :( and please explain why the slope would be then 2? thank you
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
Okay let's do it through equations :) So, the interceptform a straight line for xintercept 'a', and yintercept 'b', is: \[\large \frac x a + \frac y b =1\] Now since, the yintercept in double that of the xintercept, it will be safe to replace 'b' with '2a'. What do you think?
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
yes i tried that... i couldn't get a final answer, though :( i got stuck... x/a+y/2a=1 then i can't think of another equation because things seem to be missing like for the slope intercept form there's no slope. for the 2 point form there's no other point. for the point slope form, there's no slope... :(
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
oh wait i just had an idea!
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
You don't need any other equation! The line passes through (1/2, 2), and so you put in x=1/2 and y=2 in the equation, and find out 'a'!  is that the idea that you just had? :P
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
exactly!! HAHAHAHA i can't believe that took me forever to figure out!! i kept on focusing on the "other equation"!! wait let me solve try to this... hahaha
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
Take your time! :)
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
my x int is (3/2, 0) and my y int is (0, 3) so y=2x3 !!:) yaaay! thank you sooo much apoorvk!!
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
@dydlf  hey you seem to have made a slight bit of a calculating error. xintercept should be '1/2' actually  and so your equation will change as well. Check it out.
 2 years ago

dydlf Group TitleBest ResponseYou've already chosen the best response.0
OH RIGHT!! HAHAHAHA careless me! thank you, apoorvk! my bad! thanks, thanks! so it's y=2x1 !!:)
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
No worries mate ;)
 2 years ago
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