Math Problem

Test Preparation SAT Preparation
1

<p>I got a math problem here. Haven’t figured out how to do this one. Its a hard one.</p>

<p>[URL=<a href=“http://imageshack.us%5D%5BIMG%5Dhttp://img254.imageshack.us/img254/8954/46723057sq9.png%5B/IMG%5D%5B/URL”>http://imageshack.us]

http://img254.imageshack.us/img254/8954/46723057sq9.png

[/URL</a>]</p>

2

<p>Just figured it out lol…
Heres what I did…
I found the equation of the line L as it passes through (4,0) and (1,4). I graphed the line on my graphing calculator and then found the y intercept.</p>

<p>I wasted a lot of time on this problem trying to solve it using pythagoras theorem.
Any alternatives to the method which I used are welcome.!</p>

3

<p>According to me, the answer should be 16/3… Is it right…?..</p>

4

<p>I think what you did would be the simplest method…</p>

5

<p>And yes the answer is 16/3.</p>

<p>The equation of the line is 4x+3y=16. Since x=0 for a point on the y axis, this simplifies out to y=16/3.</p>

6

<p>Yep its 5.33 (16/3)</p>

7

<p>^tetrisfan - congratulations on the big 2000!</p>

<p>Another path to the answer:

  1. ABC is a 3-4-5 triangle,
  2. D is the y-intercept; from similar triangles ABC and ODC
    OD:OC = AB:AC
    OD/4 = 4/3
    OD = 16/3 <--------- y-intercept.</p>
8

<p>Does it break the copyright law to type out a question from one of the SAT practice books on here? The booklet gives the answer, but I do not know how they get it.</p>

9

<p>Hey, never realized I hit 2000! Yay to me! Thanks!</p>

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<p>it said no ‘electronic reproduction of the material’ … didn’t mention no electronic discussion. I am sure we are safe. Yes, dauntless (pun not intended)</p>