document.write( "Question 760366: in a lab experiment 12 grams of acid were produced in 27 minutes and 20 grams in 50 minutes. find a linear equation that models the number of grams produced in x minutes. \n" ); document.write( "

Algebra.Com's Answer #462597 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+y+\"$ = number of grams of
\n" ); document.write( "acid produced in $\"+x+\"$ min
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\n" ); document.write( "Plot time on the horizontal axis
\n" ); document.write( "Plot grams of acid on the vertical axis
\n" ); document.write( "-------------------------
\n" ); document.write( "You are given the 2 ( x,y ) points
\n" ); document.write( "( 27, 12 ) and
\n" ); document.write( "( 50, 20 )
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\n" ); document.write( "Use the general point-slope formula
\n" ); document.write( " $\"+%28+y+-+12+%29+%2F+%28+x+-+27+%29+=+%28+20+-+12+%29+%2F+%28+50+-+27+%29+\"$
\n" ); document.write( " $\"+%28+y+-+12+%29+%2F+%28+x+-+27+%29+=+8+%2F+23+\"$
\n" ); document.write( "Multiply both sides by $\"+23%2A%28+x+-+27+%29+\"$
\n" ); document.write( " $\"+23%2A%28+y+-+12+%29+=+8%2A%28+x+-+27+%29+\"$
\n" ); document.write( " $\"+23y+-+276+=+8x+-+216+\"$
\n" ); document.write( " $\"+23y+=+8x+%2B+60+\"$
\n" ); document.write( " $\"+y+=+%28+8%2F23%29%2Ax+%2B+60%2F23+\"$
\n" ); document.write( "check:
\n" ); document.write( "Does it go through
\n" ); document.write( "( 27, 12 ) and
\n" ); document.write( "( 50, 20 ) ?
\n" ); document.write( " $\"+12+=+%28+8%2F23%29%2A27+%2B+60%2F23+\"$
\n" ); document.write( " $\"+12+=+216%2F23+%2B+60%2F23+\"$
\n" ); document.write( " $\"+12+=+276+%2F+23+\"$
\n" ); document.write( " $\"+12+=+12+\"$
\n" ); document.write( "OK
\n" ); document.write( "You can check other point\r
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