document.write( "Question 269236: a 25lb bag of salt cost $4.50 and a 50lb bag of salt cost $6.00 find the equation of the cost as a function of weight in slope intercept form. Also fill in the blanks below. Also determine how much a 1001lb bag of salt would cost.
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Algebra.Com's Answer #197369 by checkley77(12844) $\"\"$ $\"About$

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(25,4.50) & (50,6.00)
\n" ); document.write( "m=(y2-y1)/x2-x1)
\n" ); document.write( "m=(6-4.50)/(50-25)
\n" ); document.write( "m=1.50/25=.3/5
\n" ); document.write( "Y represents -4.5 & 6
\n" ); document.write( "M represents -.3/5
\n" ); document.write( "X represents - 25 & 50
\n" ); document.write( "B represents -3
\n" ); document.write( "4.50=.3/5*25+b
\n" ); document.write( "4.50=7.5/5+b
\n" ); document.write( "4.50=1.5+b
\n" ); document.write( "b=4.50-1.50
\n" ); document.write( "b=3
\n" ); document.write( "Y=.3X/5+3
\n" ); document.write( "Y=.3/5*100+3
\n" ); document.write( "Y=30/5+3
\n" ); document.write( "Y=6+3=$9.00 for 100 lb. bag of salt.
\n" ); document.write( "-----------------------------------
\n" ); document.write( "IF that's a 1001 lb. bag then:
\n" ); document.write( "Y=.3/5*1001+3
\n" ); document.write( "Y=3003/5+3
\n" ); document.write( "Y=60.06+3=$63.06 for the 1001 lb. bag of salt.
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+120%2C+-10%2C+10%2C+.3x%2F5+%2B3%29+\"$ (graph 300x200 pixels, x from -6 to 120, y from -10 to 10, .3x/5 +3). \n" ); document.write( "

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