document.write( "Question 316408: If 6 items cost $900 to produce and 13 items cost $1600 to produce, find the linear cost function. \n" ); document.write( "

Algebra.Com's Answer #226356 by Fombitz(32388) $\"\"$ $\"About$

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Two points are (6,900) and (13,1600)
\n" ); document.write( "Find the slope.
\n" ); document.write( " $\"m=%28y2-y1%29%2F%28x2-x1%29=%281600-900%29%2F%2813-6%29\"$
\n" ); document.write( " $\"m=700%2F7=100\"$
\n" ); document.write( "Use the point-slope form of a line with either point,
\n" ); document.write( " $\"y-yp=m%28x-xp%29\"$
\n" ); document.write( " $\"y-900=100%28x-6%29\"$
\n" ); document.write( " $\"y-900=100x-600\"$
\n" ); document.write( " $\"highlight%28y=100x%2B300%29\"$ \n" ); document.write( "

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