document.write( "Question 470538: In the xy-plane, line \"l\" passes through the origin and is perpendicular to the line 4x+y=k, where k is a constant. If the two lines intersect at point (t, t+1), what is the value of t?\r
\n" ); document.write( "\n" ); document.write( "The answer is -4/3, but I am not sure how to get this answer? Please help.
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Algebra.Com's Answer #322730 by scott8148(6628)\"\" \"About 
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changing to slope-intercept, the given line becomes ___ y = -4x + k (the slope being -4)\r
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\n" ); document.write( "\n" ); document.write( "since perpendicular lines have negative-reciprocal slopes, the equation of \"l\" is ___ y = (1/4)x
\n" ); document.write( "___ the constant, intercept, term is zero because the line goes through the origin\r
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\n" ); document.write( "\n" ); document.write( "substituting ___ (t + 1) = (t) / 4\r
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\n" ); document.write( "\n" ); document.write( "4t + 4 = t
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