document.write( "Question 98151: Write qn equation of the line that passes through (9, 6) and is perpendicular to the line whose equation is y=-1/3x+7.\r
\n" ); document.write( "\n" ); document.write( "So far I have:
\n" ); document.write( "y=3x7/3
\n" ); document.write( "y-(6)=7/3 (x-9)
\n" ); document.write( "y+6=7/3x3\r
\n" ); document.write( "\n" ); document.write( "This is as far as I can go. I am trying to assist my niece and at the age of 55, my brain is not what it use to be. \n" ); document.write( "
Algebra.Com's Answer #71415 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Write an equation of the line that passes through (9, 6) and is perpendicular to the line whose equation is y =-(1/3)x + 7.
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\n" ); document.write( "The relationship for the slopes of perpendicular lines is: m1*m2 = -1
\n" ); document.write( "m1 = -1/3, find m2
\n" ); document.write( "(-1/3)*m2 = -1
\n" ); document.write( "multiply by -1
\n" ); document.write( " m2 = +3; it looks like you got that part OK
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\n" ); document.write( "Use the point slope equation: y - y1 = m(x - x1)
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\n" ); document.write( "In this equation: m = +3; x1 = 9; y1 = 6
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\n" ); document.write( "y - 6 = 3(x - 9)
\n" ); document.write( "y - 6 = 3x - 27
\n" ); document.write( "y = 3x - 27 + 6
\n" ); document.write( "y = 3x - 21 is perpendicular to y = -(1/3)x + 7
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\n" ); document.write( "Check by substituting 9 for x in the above equation
\n" ); document.write( "y = 3(9) - 21
\n" ); document.write( "Y = 27 - 21
\n" ); document.write( "Y = 6
\n" ); document.write( ":
\n" ); document.write( "Should look like this:
\n" ); document.write( "\"+graph%28+200%2C+200%2C+-25%2C+25%2C+-25%2C+25%2C+%28-1%2F3%29x+%2B+7%2C+3x+-+21%29+\"
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