document.write( "Question 613240: At 10 weeks old a puppy weighs 9 pounds. At 30 weeks old the puppy weighs 24 pounds. Assume that puppy weight is a linear function in time in weeks for the first year. If thou opt growth is graphed with weeks on the x axis and pounds on the y axis, what is the slope of the graph? What is an equation of the line? How much did the puppy weigh when it was born? At what age will the puppy weigh 30 pounds? \n" ); document.write( "

Algebra.Com's Answer #385916 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi, 
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document.write( "At 10 weeks old a puppy weighs 9 pounds. At 30 weeks old the puppy weighs 24 pounds
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document.write( "(30,24)
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document.write( "(10,9)   m = 
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document.write( " y = (13/20)x + b
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document.write( " 9 = (13/20)10 + b
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document.write( " 5/2 = b
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document.write( "  when born (x=0) weighed 2.5 lbs
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document.write( "   
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document.write( "    At 42.3 wks, puppy will weigh 30lbs
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