document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=301498>Question 301498</A>: <I><SPAN STYLE=\"word-break: break-all;\"> F(x)=-3x^2+5x\r<BR>\n" );
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document.write( "a)is the point (-1,2) on the graph of f? (Yes)<BR>\n" );
document.write( "b)if x=-2, wat is f(x)? what point is on the graph of f? (-22,0)?<BR>\n" );
document.write( "    f(x)= -3(-2)^2+5(-2)<BR>\n" );
document.write( "           -12-10<BR>\n" );
document.write( "           =-22?<BR>\n" );
document.write( "c)if f(x)=-2, what is x? What point(s) are on the graph of x? (HELP)<BR>\n" );
document.write( "    f(x)= -2=-3^2+5x<BR>\n" );
document.write( "d)what is the domain of f? (HELP)<BR>\n" );
document.write( "e)list the intercepts, if any, of the graph of f.(HELP)<BR>\n" );
document.write( "f)list the y intercept, if there is one, of the graph f.(HELP)\r<BR>\n" );
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document.write( "I've tried B and got x=-22, but Im stuck mainly on C and any help on the rest would be great! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #216200 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=216200\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> F(x)=-3x^2+5x <BR>\n" );
document.write( "a)is the point (-1,2) on the graph of f? <BR>\n" );
document.write( "f(-1) = -3(-1)^2 + 5(-1) = -3-5 = -8<BR>\n" );
document.write( "Ans: No.<BR>\n" );
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document.write( "b)if x=-2, what is f(x)? <BR>\n" );
document.write( "f(-2) = -3(4)+5(-2) = -22<BR>\n" );
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document.write( "what point is on the graph of f? (-2,-22)<BR>\n" );
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document.write( "c)if f(x)=-2, what is x? <BR>\n" );
document.write( "-2 = -3x^2+5x<BR>\n" );
document.write( "3x^2-5x-2 = 0<BR>\n" );
document.write( "x = [5 +- sqrt(25-4*3*-2)]/6<BR>\n" );
document.write( "x = [5+-7]/6<BR>\n" );
document.write( "x = 2 or x = -1/3<BR>\n" );
document.write( "Points: (2,-2) and (-1/3,-2)<BR>\n" );
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document.write( "d)what is the domain of f(x) = -3x^2+5x? <BR>\n" );
document.write( "Domain: All Real Numbers<BR>\n" );
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document.write( "e)list the intercepts, if any, of the graph of f.<BR>\n" );
document.write( "x-intercept= ?<BR>\n" );
document.write( "Let y = 0 and solve for \"x\":<BR>\n" );
document.write( "-3x^2+5x = 0<BR>\n" );
document.write( "x(3x+5) = 0<BR>\n" );
document.write( "x = 0 or x = -5/3<BR>\n" );
document.write( "x-intercepts: (0,0),(-5/3,0)<BR>\n" );
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document.write( "f)list the y intercept, if there is one, of the graph f.<BR>\n" );
document.write( "Let x = 0, then -3*0 + 5*0 = 0<BR>\n" );
document.write( "y-intercept : (0,0)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "========================================= </SPAN>\n" );
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