document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=327917>Question 327917</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For children between ages 6 and 10, height y in (inches) is frequently a linear function of age t ( in years). The height of certain child is 48 inches at age 6 and 50.5 inches at age 7.<BR>\n" );
document.write( "a) Express y as function of t.<BR>\n" );
document.write( "b) Predict the height of the child at age 10. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #234866 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=234866\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You have two points (6,48) and (7,50.5).<BR>\n" );
document.write( "Use the formula for slope,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m=%28y2-y1%29%2F%28x2-x1%29=%2850.5-48%29%2F%287-6%29=2.5%2F1=2.5 ALIGN=MIDDLE  ALT=\"m=%28y2-y1%29%2F%28x2-x1%29=%2850.5-48%29%2F%287-6%29=2.5%2F1=2.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Then use the point-slope form of a line,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y-yp=m%28x-xp%29 ALIGN=MIDDLE  ALT=\"y-yp=m%28x-xp%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,with either point.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y-48=2.5%28t-6%29 ALIGN=MIDDLE  ALT=\"y-48=2.5%28t-6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y-48=2.5t-15 ALIGN=MIDDLE  ALT=\"y-48=2.5t-15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=2.5t%2B33%29 ALIGN=MIDDLE  ALT=\"highlight%28y=2.5t%2B33%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "What is the height(y) when the age(t) is 10?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=H=2.5%2810%29%2B33 ALIGN=MIDDLE  ALT=\"H=2.5%2810%29%2B33\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=H=25%2B33=58 ALIGN=MIDDLE  ALT=\"H=25%2B33=58\"   DISABLED_style= \"max-width:90%; height:auto;\" > inches </SPAN>\n" );
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