document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=806431>Question 806431</A>: <I><SPAN STYLE=\"word-break: break-all;\"> using ordered pairs find the missing coordinate to make the slope true\r<BR>\n" );
document.write( "\n" );
document.write( "(x,3) and (19,-17)<BR>\n" );
document.write( "Slope = -2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #486342 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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/cgi-bin/show-face.mpl?user=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=486342\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Get the equation in point-slope form: y - y1 = m(x - x1) <BR>\n" );
document.write( "---<BR>\n" );
document.write( "Use the given slope -2 and the given point (19,-17), like so:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "y - (-17) = (-2)(x - 19) <BR>\n" );
document.write( "Simplify, like so: <BR>\n" );
document.write( "y + 17 = -2x + 38<BR>\n" );
document.write( "y = -2x + 21<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Now plug-in the y-coordinate (3) of the point with missing x-coordinate (x,3), and solve the equation for x, like so:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "3 = -2x + 21<BR>\n" );
document.write( "2x = 21 - 3<BR>\n" );
document.write( "2x = 18<BR>\n" );
document.write( "Answer:<BR>\n" );
document.write( "x = 9<BR>\n" );
document.write( "---<BR>\n" );
document.write( "To check the answer, calculate the slope from the two points, like so:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "m = (-17 - 3) / (19 - 9)<BR>\n" );
document.write( "m = -20 / 10<BR>\n" );
document.write( "m = -2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Convert fractions, decimals, and percents:<BR>\n" );
document.write( "https://sooeet.com/math/fraction-decimal-percent.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Calculate and graph the linear regression of any data set:<BR>\n" );
document.write( "https://sooeet.com/math/linear-regression.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );