document.write( "Question 548351: 4. The line \r \n" );
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document.write( "represents an estimate of the average cost of gasoline each year. The line \r \n" );
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document.write( "estimates the price of gasoline in January of each year (“Consumer price index,” 2006). \n" );
document.write( "a. Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your reasoning.\r \n" );
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document.write( "b. Use the equations of the lines to determine if they are parallel. What did you find?\r \n" );
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document.write( "c. Did your answer to Part b. confirm your expectation in Part a? \n" );
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