document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=198278>Question 198278</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write an exponential function of the form y=ab^x that includes the given points..\r<BR>\n" );
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document.write( "(-1,3/8),(1,3/2)\r<BR>\n" );
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document.write( "thanks for the help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #148718 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=148718\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write an exponential function of the form y=ab^x that includes the given points.. \r<BR>\n" );
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document.write( "(-1,3/8),(1,3/2) \r<BR>\n" );
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document.write( "Substitute for x and y to solve for a and b:<BR>\n" );
document.write( "(3/8) = ab^(-1)<BR>\n" );
document.write( "(3/2) = ab^(1)<BR>\n" );
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document.write( "Divide the 2nd equation by the 1st to solve for \"b\":<BR>\n" );
document.write( "4 = b^2<BR>\n" );
document.write( "b = 2<BR>\n" );
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document.write( "Now solve for \"a\":<BR>\n" );
document.write( "(3/2) = a(2)^1<BR>\n" );
document.write( "a = 3/4<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "y = (3/4)(2)^x<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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