document.write( "Question 425433: Consider the Quadratic function . f(x)=3x^2-15x-18
\n" ); document.write( "its vertex is ( )
\n" ); document.write( "its largest x-intercept is x=( )
\n" ); document.write( "its y-intercept y=( ) \n" ); document.write( "
Algebra.Com's Answer #296240 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
Consider the Quadratic function . f(x)=3x^2-15x-18
\n" ); document.write( "its vertex is ( )
\n" ); document.write( "its largest x-intercept is x=( )
\n" ); document.write( "its y-intercept y=( )\r
\n" ); document.write( "\n" ); document.write( "..
\n" ); document.write( "y=3x^2-15x-18
\n" ); document.write( "complete the square to put equation into standard form:
\n" ); document.write( "y=3(x^2-5x+25/4)-18-75/4
\n" ); document.write( "y=3(x-5/2)^2-147/4 (standard form with vertex at (5/2,-147/4
\n" ); document.write( "..
\n" ); document.write( "y-intercept, x=0
\n" ); document.write( "y=-18
\n" ); document.write( "..
\n" ); document.write( "x-intercept, y=0
\n" ); document.write( "3x^2-15x-18=0
\n" ); document.write( "=x^2-5x-6=0
\n" ); document.write( "=(x-6)(x+1)=0
\n" ); document.write( "x-6=0
\n" ); document.write( "x=6
\n" ); document.write( "x+1=0
\n" ); document.write( "x=-1
\n" ); document.write( "..
\n" ); document.write( "ans:
\n" ); document.write( "vertex (5/2,-147/4
\n" ); document.write( "y-intercept y=-18
\n" ); document.write( "x-intercepts:
\n" ); document.write( "x=6
\n" ); document.write( "x=-1
\n" ); document.write( "..
\n" ); document.write( "You can see all these parameters on the graph below:\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+300%2C+300%2C+-10%2C+10%2C+-40%2C+10%2C3x%5E2-15x-18%29+\"\r
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