document.write( "Question 822267: [ Joel is 8 year older than Karen, and Karen is twice as old as Lina. If Lina is z years old, how old is Joel in terms of z? ] \n" ); document.write( "
Algebra.Com's Answer #494739 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "x = y + 8
\n" ); document.write( "y = 2z
\n" ); document.write( "z = 0, 1, 2, ...
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x - y = 8
\n" ); document.write( "y - 2z = 0
\n" ); document.write( "z = 0, 1, 2, ...
\n" ); document.write( "---
\n" ); document.write( "by matrix method:
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "x= joel = 8 + 2z
\n" ); document.write( "y= karen = 2z
\n" ); document.write( "z= lina = 0, 1, 2, ...
\n" ); document.write( "---
\n" ); document.write( "by substitution:
\n" ); document.write( "---
\n" ); document.write( "x = y + 8
\n" ); document.write( "y = 2z
\n" ); document.write( "---
\n" ); document.write( "x = joel = 2z + 8
\n" ); document.write( "z = lina = 0, 1, 2, ...
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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