In a lab experiment 4 grams of acid were produced in 10 minutes and 15 grams in 50 minutes. Let y be the grams produced in x minutes. Write an equation for grams produced.
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document.write( "When x = 10 minutes, then y = 4 grams. \r\n" );
document.write( "When x = 50 minutes, then y = 15 grams.\r\n" );
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document.write( "This information can be interpreted as two points on a line.\r\n" );
document.write( "So the problem is the same as:\r\n" );
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document.write( "Find the equation of the line passing through the points (10,4) and (50,15)\r\n" );
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document.write( "We use the slope formula:\r\n" );
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document.write( "We use the point-slope formula:\r\n" );
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document.write( "Substituting:\r\n" );
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document.write( "Multiply through by 40\r\n" );
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document.write( "Add 160 to both sides:\r\n" );
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document.write( "Divide through by 40\r\n" );
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document.write( "Or you could make the fractions into decimals:\r\n" );
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document.write( "Edwin
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