document.write( "Question 1155601: at sea level the boiling point of water is 100 degrees celsius. At altitude of 7 km, the boiling point of water is 75.5 degrees celsius. Write a linear function of the boiling point of water y in terms of the altitude above sea level x. \n" ); document.write( "

Algebra.Com's Answer #778203 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
You are given the points:
\n" ); document.write( "( 0, 100 )
\n" ); document.write( "( 7, 75.5 )
\n" ); document.write( "Use the general point-slope formula
\n" ); document.write( " $\"+%28+y+-+100+%29+%2F+%28+x+-+0+%29+=+%28+75.5+-+100+%29+%2F+%28+7+-+0+%29+\"$
\n" ); document.write( " $\"+%28+y+-+100+%29+%2F+%28+x+-+0+%29+=+-24.5+%2F+7+\"$
\n" ); document.write( " $\"+%28+y+-+100+%29+%2F+x+=+-3.5+\"$
\n" ); document.write( " $\"+y+-+100+=+-3.5x+\"$
\n" ); document.write( " $\"+y+=+-3.5x+%2B+100+\"$
\n" ); document.write( "---------------------------
\n" ); document.write( "check:
\n" ); document.write( "( 0,100 )
\n" ); document.write( " $\"+100+=+-3.5%2A0+%2B+100+\"$
\n" ); document.write( " $\"+100+=+100+\"$
\n" ); document.write( "and
\n" ); document.write( "( 7, 75.5 )
\n" ); document.write( " $\"+75.5+=+-3.5%2A7+%2B+100+\"$
\n" ); document.write( " $\"+75.5+=+-24.5+%2B+100+\"$
\n" ); document.write( " $\"+75.5+=+75.5+\"$
\n" ); document.write( "OK \n" ); document.write( "

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