document.write( "Question 1123062: Plot the points (0,-10), (8,1) and (15,10). How far is the second point from the line joining the other two? \n" ); document.write( "
Algebra.Com's Answer #739287 by josmiceli(19441)\"\" \"About 
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Find slope of line connecting ( 0, -10 ) and ( 15, 10 )
\n" ); document.write( "\"+m%5B1%5D+=+%28+10+-%28-10%29+%29+%2F+%28+15+-+0+%29+\"
\n" ); document.write( "\"+m%5B1%5D+=+20%2F15+\"
\n" ); document.write( "\"+m%5B1%5D+=+4%2F3+\"
\n" ); document.write( "———————————
\n" ); document.write( "\"+y+=+%284%2F3%29%2Ax+%2B+b+\"
\n" ); document.write( "\"+10+=+%284%2F3%29%2A15+%2B+b+\"
\n" ); document.write( "\"+30+=+60+%2B+3b+\"
\n" ); document.write( "\"+3b+=+-30+\"
\n" ); document.write( "\"+b+=+-10+\"
\n" ); document.write( "\"+y+=+%284%2F3%29%2Ax+-+10+\"
\n" ); document.write( "————————————
\n" ); document.write( "Any line perpendicular to this line
\n" ); document.write( "Has slope \"+m%5B2%5D+=+-1%2F%284%2F3%29+\"
\n" ); document.write( "\"+m%5B2%5D+=+-3%2F4+\"
\n" ); document.write( "——————————-
\n" ); document.write( ".\"+1+=+%28-3%2F4%29%2A8+%2B+b+\"
\n" ); document.write( "\"+1+=+-6+%2B+b+\"
\n" ); document.write( "\"+b+=+7+\"
\n" ); document.write( "\"+y+=+%28-3%2F4%29%2Ax+%2B+7+\"
\n" ); document.write( "——————————
\n" ); document.write( "Find intersection of the 2 lines
\n" ); document.write( "Subtract the equations
\n" ); document.write( "\"+%284%2F3%29%2Ax+-+10+-%28-3%2F4%29%2Ax+-+7+=+0+\"
\n" ); document.write( "Multiply by 12
\n" ); document.write( "\"+16x+-+120+%2B+9x+-+84+=+0+\"
\n" ); document.write( "\"+25x+=+204+\"
\n" ); document.write( "\"+x+=+204%2F25+\"
\n" ); document.write( "—————————-
\n" ); document.write( "No time to finish
\n" ); document.write( "Check math carefully
\n" ); document.write( "Get another opinion, too\r
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