document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=72470>Question 72470</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (1)Write the equation of the line that satisfies the given conditions. Expressthe final equation in standard form. Contains the point (-3, 7) and is parallel to the y-axis.\r<BR>\n" );
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document.write( "(2)Write the equation of the line that satisfies the given conditions. Expressthe final equation in standard form. Contains the origin and is parallel to the line 2x-9y=-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #51805 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=51805\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) any line parallel to the y axis will be in the form of x=... (notice there's no y value). Since the point contains x=-3, the line's equation is x=-3. <BR>\n" );
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document.write( "b)First solve for y<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%282x-2x%29-9y=-1-2x ALIGN=MIDDLE  ALT=\"cross%282x-2x%29-9y=-1-2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >Subtract 2x from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-9y=-1-2x ALIGN=MIDDLE  ALT=\"-9y=-1-2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >divide both sides by -9<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=1%2F9%2B2%2F9x ALIGN=MIDDLE  ALT=\"y=1%2F9%2B2%2F9x\"   DISABLED_style= \"max-width:90%; height:auto;\" > So the slope is 2/9 and the y-intercept is 1/9. Parallel lines have the same slope, so the slope of our unknown equation is m=1/9. Since the line is going through the origin (0,0) our y-intercept will be zero (b=0). So our equation is <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=1%2F9x%2B0 ALIGN=MIDDLE  ALT=\"y=1%2F9x%2B0\"   DISABLED_style= \"max-width:90%; height:auto;\" > or<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=1%2F9x ALIGN=MIDDLE  ALT=\"y=1%2F9x\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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