<PRE><B>Question 226321</B>
If x and y are directly related when x = 2 and y = 7, find y when x =8


Step 1.  Given x and y are directly related then y/x=a where a is a constant.


Step 2.  Then {{{7/2=a=y/8}}}.  Solving for y yields the following steps.


{{{7/2=y/8}}}


Multiply by 8 to both sides of the equation


{{{8*7/2=8*y/8}}}


{{{28=y}}}


Step 3.  ANSWER:   {{{y=28}}}


I hope the above steps were helpful.


For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.


Good luck in your studies!


Respectfully,
Dr J</PRE>