document.write( "Question 166991This question is from textbook elementary &intermediate algebra
\n" ); document.write( ": A line passing through(2,3) and (5,y) is perpendicular to a line with a slope 3/4. What is the value of y? \n" ); document.write( "
Algebra.Com's Answer #123009 by jojo14344(1513)\"\" \"About 
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\n" ); document.write( "(2,3) and (5,y); perpendicular to a line w/ slope=3/4
\n" ); document.write( "Via Point-Slope form: \"m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"
\n" ); document.write( "But remember, since it's perpendicular, the slope for above points: \"m%5B2%5D=-1%2Fm%5B1%5D\"
\n" ); document.write( "\"m%5B2%5D=-1%2F%283%2F4%29=-4%2F3\"
\n" ); document.write( "Subst.,
\n" ); document.write( "\"-4%2F3=%28y%5B2%5D-3%29%2F%285-2%29\"
\n" ); document.write( "\"-4%2F3=%28y%5B2%5D-3%29%2F3\", cross multiply
\n" ); document.write( "\"y%5B2%5D-3=%28-4%2F3%29%283%29=cross%28-12%294%2Fcross%283%29\"
\n" ); document.write( "\"y%5B2%5D=-4%2B3=-1\"
\n" ); document.write( "\"highlight%28y%5B2%5D=-1%29\", Answer
\n" ); document.write( "We'll check the graph but first let's get the y-intercept:
\n" ); document.write( "Via Slope-Intercept: \"y=mx%2Bb\"
\n" ); document.write( "Thru points: (5,-1)
\n" ); document.write( "\"-1=%28-4%2F3%29%285%29%2Bb\"
\n" ); document.write( "\"-1=%28-20%2F3%29%2Bb\"
\n" ); document.write( "\"b=%28-1%29%2B%2820%2F3%29=%28-3%2B20%29%2F3\" --> \"b=17%2F3\" y intercept
\n" ); document.write( "let's see the graph,
\n" ); document.write( " --it passes thru points(2,3)(5,-1), see also y-intercept @ (17/3)
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
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