document.write( "Question 114686: write the equation of the line that contains the point (5,-2) and is perpendicular to the line 5x-2y=3\r
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document.write( "Also, how do I send you a problem that contains exponents when all I have is a standard keyboard?\r
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document.write( "-Jamie \n" );
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Algebra.Com's Answer #83655 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! write the equation of the line that contains the point (5,-2) and is perpendicular to the line: 5x-2y = 3: \n" ); document.write( ": \n" ); document.write( "Find the slope of the given equation, put it in the slope intercept form (y=mx+b): \n" ); document.write( "5x -2y = 3 \n" ); document.write( "-2y = -5x + 3 \n" ); document.write( "We want y to be positive; multiply equation by -1 \n" ); document.write( "2y = +5x - 3 \n" ); document.write( "Divide equation by 2 \n" ); document.write( "y = \n" ); document.write( "Use the decimal form \n" ); document.write( "y = 2.5x - 1.5 \n" ); document.write( ": \n" ); document.write( "The slope (m1) of this equation is +2.5 \n" ); document.write( ": \n" ); document.write( "The relationship of the slope of perpendicular lines is m1*m2 = -1 \n" ); document.write( ": \n" ); document.write( "We know m1 = +2.5, find m2 the slope of the perpendicular line \n" ); document.write( "2.5*m2 = -1 \n" ); document.write( "m2 = \n" ); document.write( "m2 = -.4 is the slope \n" ); document.write( ": \n" ); document.write( "Find the equation of the line using the point/slope equation: y - y1 = m(x - x1) \n" ); document.write( "We have m = -.4; Given: x1 = 5; y1 = -2 \n" ); document.write( "y - (-2) = -.4(x - 5) \n" ); document.write( "y + 2 = -.4x + 2 \n" ); document.write( "y = -.4x + 2 - 2 \n" ); document.write( "y = .4x is the line that is perpendicular to the 5x - 2y = 3 \n" ); document.write( ": \n" ); document.write( "If you graph these you can see that this is true \n" ); document.write( " \n" ); document.write( "Note that the perpendicular line (purple line) goes thru x=5; y=-2 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "One way you can write exponents is use the ^ ; (upper case 6) \n" ); document.write( "for instance an equation can be written y = x^3 + 2x^2 + x + 10 \n" ); document.write( " |