document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1091036>Question 1091036</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given f(x)  =  –2(x - 3)^2 + 6,  explain how you know: 					<BR>\n" );
document.write( "a) the direction of opening for the parabola. \r<BR>\n" );
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document.write( "b)the number of zeroes this parabola has. </SPAN>\n" );
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document.write( " f(x) = –2(x - 3)^2 + 6, <BR>\n" );
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document.write( "Opens downward, and vertex is a maximum point.  The factor <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2 ALIGN=MIDDLE  ALT=\"-2\"   DISABLED_style= \"max-width:90%; height:auto;\" > tells this.  Factor is negative.\r<BR>\n" );
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document.write( "Two zeros.  Vertex being at (3,6) and ABOVE the x-axis,  and parabola opening DOWNWARD makes the graph cross the x-axis in two places.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-8%2C8%2C-8%2C8%2C-2%28x-3%29%5E2%2B6%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-8%2C8%2C-8%2C8%2C-2%28x-3%29%5E2%2B6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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