document.write( "Question 727022: In 1980, the average price of a home in lake county was $92,000. By 1987,the average price of a home was $127,000. Which of the following is a linear model for the price p of a home in lake county, in terms of the year t? Let t=0 correspond to 1980. A) P=5000t+92,000. B) P=127,000-35,000t C) P=32,000t+92,000. D)P=127,000-5000t \n" ); document.write( "
Algebra.Com's Answer #444949 by josmiceli(19441)\"\" \"About 
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\"+t+\" is plotted on the horizontal axis
\n" ); document.write( "{{ P }}} is plotted on the vertical axis
\n" ); document.write( "You are given 2 points
\n" ); document.write( "( 0, 92000 ) and ( 7, 127000 )
\n" ); document.write( "Use the point-slope formula
\n" ); document.write( "\"+%28+P+-+92000+%29+%2F+%28+t+-+0+%29+=+%28+127000+-+92000+%29+%2F+%28+7+-+0+%29+\"
\n" ); document.write( "\"+%28+P+-+92000+%29+%2F+t+=+35000+%2F+7+\"
\n" ); document.write( "\"+P+-+92000+=+5000t+\"
\n" ); document.write( "\"+P+=+5000t+%2B+92000+\"
\n" ); document.write( "(A) is the answer
\n" ); document.write( "check:
\n" ); document.write( "Let \"+t+=+7+\"
\n" ); document.write( "\"+P+=+5000%2A7+%2B+92000+\"
\n" ); document.write( "\"+P+=+35000+%2B+92000+\"
\n" ); document.write( "\"+P+=+127000+\"
\n" ); document.write( "OK
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