(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A line from point m(4,8,-2) is due south and has a grade of -50% to pt. n. complete the location of n(?,2,?) and give the true length of the line.

2. Relevant equations

Grade: \frac{rise}{run} x 100%

The plane H, F and S - if someone knows about this other than me

The bearing can only be determined in the horizontal plane (north south ETC.)

3. The attempt at a solution

This is a graphing subject... and im using an orthographic paper...

Lemme explain....

the point is m(4, 8, -2)... so the line downward is due south in the horizontal plane since the bearing can only be determined in the horizontal plane... but my *problem* is where is the line??

The grade here is 50% so

-50 / 100 = - 1 / 2

so 1 to the rise and 2 to the run from n thus it is going down one unit and going to the left 2 units since it is negative... but i dont know where n lies... so this is my *problem*

and im suspecting that n lies at the y coordinate... but cant still get the point n

I dont know if i posted this on the right thread but forgive me

please help and give some hints if theres any engineer/architect having knowledge of this...

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# Descriptive geometry

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