document.write( "Question 543151: how do you find slope for 5y=160+9x and 5x=90-9y \n" ); document.write( "

Algebra.Com's Answer #354764 by jpg7n16(66) $\"\"$ $\"About$

You can put this solution on YOUR website!
Remember, y=mx+b, where m=slope. So all you need to do is solve for y.
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\n" ); document.write( " $\"5y=160%2B9x\"$
\n" ); document.write( "Divide by 5: $\"y=32%2B%289%2F5%29x\"$
\n" ); document.write( "So $\"y=%289%2F5%29x%2B32\"$ , and therefore $\"m=9%2F5\"$
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\n" ); document.write( "also $\"5x=90-9y\"$
\n" ); document.write( "Add 9y to each side: $\"5x%2B9y=90\"$
\n" ); document.write( "Subtract 5x from each side: $\"9y=-5x%2B90\"$
\n" ); document.write( "Divide by 9: $\"y=%28-5%2F9%29x%2B10\"$
\n" ); document.write( "Therefore, $\"m=-5%2F9\"$ \n" ); document.write( "

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