document.write( "Question 819546: Write an equation in slope intercept form for the line described:
\n" ); document.write( "contains point (4, -3)and is perpendicular to y=4x+5
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Algebra.Com's Answer #493408 by LinnW(1048)\"\" \"About 
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We want a line perpendicular to y=4x+5.
\n" ); document.write( "The slope needs to be the negative inverse of
\n" ); document.write( "the original equation. The negative inverse
\n" ); document.write( "of 4 is -1/4. (4)(-1/4)=1.
\n" ); document.write( "Using y = mx + b as a template,
\n" ); document.write( "and the point (4,-3) we will
\n" ); document.write( "substitute -1/4 for m, 4 for x, and -3 for y.
\n" ); document.write( " -3 = (-1/4)(4) + b
\n" ); document.write( " -3 = -1 + b
\n" ); document.write( "add 1 to each side.
\n" ); document.write( " -2 = b
\n" ); document.write( "So our equation is y = (-1/4)x -2
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