document.write( "Question 1016729: Given line L: y=2x-3. What is the gradient of a line which is perpendicular to L?\r
\n" ); document.write( "\n" ); document.write( "Could someone help me? I don't get how the answer's not 2. Thanks :)
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Algebra.Com's Answer #633126 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
the gradient is the slope.\r
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\n" ); document.write( "\n" ); document.write( "your line is y = 2x - 3
\n" ); document.write( "the slope is 2 and the y-intercept is -3.\r
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\n" ); document.write( "\n" ); document.write( "another line parallel to y = 2x - 3 would have same slope and a different y-intercept.\r
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\n" ); document.write( "\n" ); document.write( "another line perpendicular to y = 2x - 3 would have a slope that is the negative reciprocal of 2.\r
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\n" ); document.write( "\n" ); document.write( "that makes the slope equal to -1/2.\r
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\n" ); document.write( "\n" ); document.write( "a line parallel to y = 2x - 3 could be y = 2x + 3.\r
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\n" ); document.write( "\n" ); document.write( "a line perpendicular to y = 2x - 3 could be y = -1/2 * x + 3.\r
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\n" ); document.write( "\n" ); document.write( "here's what they look like on the graph.\r
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\n" ); document.write( "\n" ); document.write( "red is the original equation of y = 2x - 3\r
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\n" ); document.write( "\n" ); document.write( "blue is the parallel equation of y = 2x + 3\r
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\n" ); document.write( "\n" ); document.write( "green is the perpendicular equation of y = -1/2 * x + 3\r
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\n" ); document.write( "\n" ); document.write( "the y-intercepts are the intersection of the lines with the y-axis.\r
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