document.write( "Question 1108279: An office printer is worth for $42,000 when it is 2 years old. When the printer is 6 years old, the value of the printer is $30,000. If the value of the printer decreases in a linear fashion, determine the slope and give a practical interpretation of the slope. \n" ); document.write( "

Algebra.Com's Answer #723298 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Youare given 2 points on a straight line
\n" ); document.write( "( 2, 42000 )
\n" ); document.write( "( 6, 30000 )
\n" ); document.write( "Plot time, $\"+t+\"$ , on the horizontal axis
\n" ); document.write( "Plot value, $\"+V+\"$ , on the vertical axis
\n" ); document.write( "-------------------------------------
\n" ); document.write( "The slope is:
\n" ); document.write( "[ change in $\"+V+\"$ ] / [ change in $\"+t+\"$ ]
\n" ); document.write( " $\"+m+=+%28+30000+-+42000+%29+%2F+%28+6+-+2+%29+\"$
\n" ); document.write( " $\"+m+=+-12000+%2F+4+\"$
\n" ); document.write( " $\"+m+=+-3000+\"$ dollars/yr
\n" ); document.write( "---------------------------
\n" ); document.write( "The slope tells you how fast the value is decreasing
\n" ); document.write( "It decreases $3,000 each year\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );