document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=825354>Question 825354</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Alexander wanted to purchase a bicycle that costs $240. He made this table to show how much money he had in the first 4 months of saving money.\r<BR>\n" );
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document.write( "Month   Amount of Money<BR>\n" );
document.write( "1------	$140<BR>\n" );
document.write( "2------	$155<BR>\n" );
document.write( "3------	$170<BR>\n" );
document.write( "4------	$185\r<BR>\n" );
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document.write( "I SEE IT INCREASES BY $15 AND THOUGHT IT WOULD BE y= 4x + 15 but when you to do the math it doesn't work. Please help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #497264 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=497264\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ---<BR>\n" );
document.write( "given the x,y data table:<BR>\n" );
document.write( "1 140<BR>\n" );
document.write( "2 155<BR>\n" );
document.write( "3 170<BR>\n" );
document.write( "4 185<BR>\n" );
document.write( "---<BR>\n" );
document.write( "to solve the linear equation, copy and paste the above x,y data table:<BR>\n" );
document.write( "into the input box of the linear regression solver here: <BR>\n" );
document.write( "https://sooeet.com/math/linear-regression.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "the data is perfectly linear according to the linear regression:<BR>\n" );
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document.write( "result:<BR>\n" );
document.write( "y-intercept = (0, 125)<BR>\n" );
document.write( "slope = 15<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "the slope-intercept form of the regression line:<BR>\n" );
document.write( "y = 15x + 125<BR>\n" );
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document.write( "interpretation:<BR>\n" );
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document.write( "he saves $15 by the end of each month, but he starts out with $125 already in the savings account<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( "Solve systems of linear equations up to 4-equations 4-variables:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );