document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=670979>Question 670979</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i have a test tomarrow on linear equations and i want to know how to find the answer to a problem of something like y=3x+8 (2,4) I'm not sure where to plug to the two numbers in because i cannot solve without a variable<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417241 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=417241\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Perhaps, the (2, 4) is the coordinant through which another line passes.<BR>\n" );
document.write( "That other line may be parallel or perpendicular to the given line.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "Parallel lines have the same slope.<BR>\n" );
document.write( "Perpendicular lines have negative inverse slopes<BR>\n" );
document.write( "...<BR>\n" );
document.write( "You would use the slope of the given line with the coordinates to solve for the y-interecept.  Then you can write the equation of the \"other\" line.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "You may be asked if those coordiantes (2, 4) are on that line.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4+=+3x+%2B+8%2C+so+4+-+8+=+3x%2C+so+x+=+-4%2F3+%3C%3E+2 ALIGN=MIDDLE  ALT=\"4+=+3x+%2B+8%2C+so+4+-+8+=+3x%2C+so+x+=+-4%2F3+%3C%3E+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F3 ALIGN=MIDDLE  ALT=\"-4%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, 4)<BR>\n" );
document.write( "Hence, (2, 4) would not be a point on the line.<BR>\n" );
document.write( "Alternatively,<BR>\n" );
document.write( "y = 3(2) + 8 = 6 + 8 = 14<BR>\n" );
document.write( "(2, 14)<BR>\n" );
document.write( "Again, (2, 4) is proven not to be on that line.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "Email me if you have any further questions.<BR>\n" );
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