document.write( "Question 1110141: A. Write the equations 8x+5y=120 and 5x-8y=-80 in slope intercept form. B. Determine slope for each equation 8x+5y=120 and 5x-8y=-80 with label. C. Determine algebraically whether the given pair of lines 8x+5y=120 and 5x-8y=-80 are parallel perpendicular or neither by comparing slopes either algebraically (if perpendicular) or numerically (if parallel or neither) \n" ); document.write( "
Algebra.Com's Answer #725125 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
\"system%288x%2B5y=120%2C+and%2C+5x-8y=-80%29\"\r
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\n" ); document.write( "\n" ); document.write( "The slopes are \"-8%2F5\" and \"5%2F8\".
\n" ); document.write( "You can tell by looking at the equations, or if necessary, solving for y in terms of x, and adjust to slope-intercept form.\r
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\n" ); document.write( "\n" ); document.write( "THIS should tell you something: \"-%288%2F5%29%2A%285%2F8%29=-1\".
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