document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=367297>Question 367297</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Perpendicular to the graph of y = 1/3 x + 7; y-intercept (0,5) </SPAN>\n" );
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document.write( "Perpendicular to the graph of y = 1/3 x + 7; y-intercept (0,5)<BR>\n" );
document.write( ".56<BR>\n" );
document.write( "Because<BR>\n" );
document.write( "y = 1/3 x + 7<BR>\n" );
document.write( "is in \"slope-intercept\" form: y=mx+b<BR>\n" );
document.write( "We can see that the slope is: 1/3<BR>\n" );
document.write( ".<BR>\n" );
document.write( "For a line to be perpendicular, the slope of the new line must be the \"negative reciprocal\":<BR>\n" );
document.write( "(1/3)m = -1<BR>\n" );
document.write( "m = -3 (slope of our new line)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Given that the problem stated that the y-intercept is at (0,5) this means that the 'b' (in the slope intercept form) is 5<BR>\n" );
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document.write( "So, our equation is:<BR>\n" );
document.write( "y = -3x + 5 (this is what they're looking for)\r<BR>\n" );
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document.write( " </SPAN>\n" );
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