document.write( "Question 1099202: The median price of an existing home was $160,000 in 2000 and $240,000 in 2007. If x represents the number of years since 2000, use these data points to determine a line of best fit for the trends in the price of existing homes. Write the equation in slope-intercept form. \n" ); document.write( "
Algebra.Com's Answer #713625 by josmiceli(19441)\"\" \"About 
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You are given 2 points on the line:
\n" ); document.write( "( 0, 160 )
\n" ); document.write( "( 7, 240 )
\n" ); document.write( "Note that y-values are in thousands of dollars
\n" ); document.write( "--------------------------------------------
\n" ); document.write( "Use the general point-slope formula
\n" ); document.write( "\"+%28+y+-+160+%29+%2F+%28+x+-+0+%29+=+%28+240+-+160+%29+%2F+%28+7+-+0+%29+\"
\n" ); document.write( "\"++y+-+160+=+%28+80%2F7+%29%2Ax+\"
\n" ); document.write( "\"+y+=+%28+80%2F7+%29%2Ax+%2B+160+\"
\n" ); document.write( "-------------------------
\n" ); document.write( "check:
\n" ); document.write( "Does it go through ( 7, 240 ) ?
\n" ); document.write( "\"+y+=+%28+80%2F7+%29%2Ax+%2B+160+\"
\n" ); document.write( "\"+240+=+%28+80%2F7+%29%2A7+%2B+160+\"
\n" ); document.write( "\"+240+=+80+%2B+160+\"
\n" ); document.write( "\"+240+=+240+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );