document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=39419>Question 39419</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Y=2x-3\r<BR>\n" );
document.write( "\n" );
document.write( "Y=x2+3\r<BR>\n" );
document.write( "\n" );
document.write( "Y=3x<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #26778 by </B><A HREF=/tutors/aboutme.mpl?userid=tran3209><B>tran3209(100)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tran3209><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=26778\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=2x+3<BR>\n" );
document.write( "This is an equation of a line<BR>\n" );
document.write( "We need to find 2 points to draw the line. <BR>\n" );
document.write( "Find The y intercept and x intercept\r<BR>\n" );
document.write( "\n" );
document.write( "if x is 0 y = 3<BR>\n" );
document.write( "y=3 is the y intercept\r<BR>\n" );
document.write( "\n" );
document.write( "if y is 0 x= -3/2<BR>\n" );
document.write( "x=-3/2 is the x intercept\r<BR>\n" );
document.write( "\n" );
document.write( "By joining the 2 points together you will find the line\r<BR>\n" );
document.write( "\n" );
document.write( "y=x^2 + 3<BR>\n" );
document.write( "This is an equation of a parabola.<BR>\n" );
document.write( "y=ax^2+bx+c<BR>\n" );
document.write( "Here a=1 b=0 c=3\r<BR>\n" );
document.write( "\n" );
document.write( "a=1>0 the parabola opens upwards<BR>\n" );
document.write( "The coordinates of the minimum point are<BR>\n" );
document.write( "x=-b/2a = 0/2 =0\r<BR>\n" );
document.write( "\n" );
document.write( "y(0)=0^2+3 y = 3\r<BR>\n" );
document.write( "\n" );
document.write( "we need 2 more points to draw the parabola.\r<BR>\n" );
document.write( "\n" );
document.write( "x=1 y=-4<BR>\n" );
document.write( "x=-1 y = 4\r<BR>\n" );
document.write( "\n" );
document.write( "Join the tree points together and you see the parabola\r<BR>\n" );
document.write( "\n" );
document.write( "y=3x<BR>\n" );
document.write( "This is the equation of a line that passes through the point O of the axis\r<BR>\n" );
document.write( "\n" );
document.write( "y=ax\r<BR>\n" );
document.write( "\n" );
document.write( "We need 1 more point to draw the line\r<BR>\n" );
document.write( "\n" );
document.write( "x=1 y=3\r<BR>\n" );
document.write( "\n" );
document.write( "Join point O and this point (x=1 y=3) we have the line.\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28+400%2C+400%2C+-10%2C+10%2C+-10%2C+10%2C+3x%2C+2x%2B3%2C+x%5E2%2B3+%29 ALIGN=MIDDLE  ALT=\"graph%28+400%2C+400%2C+-10%2C+10%2C+-10%2C+10%2C+3x%2C+2x%2B3%2C+x%5E2%2B3+%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );