document.write( "Question 959744: for g(x)=3x^2-12x+6
\n" ); document.write( "a,find the values of the x intercepts
\n" ); document.write( "b,state the coordinates of the y intercept
\n" ); document.write( "c,state the vertex
\n" ); document.write( "d,state the axis of symmetry
\n" ); document.write( "e,state the direction of the parabola
\n" ); document.write( "f,decide whether there is a relative maximum or minimum, then state it
\n" ); document.write( "g,graph the function accurately using the above information
\n" ); document.write( "h, state the domain
\n" ); document.write( "i,state the range
\n" ); document.write( "j,state the interval of x where the graph is increasing
\n" ); document.write( "k,state the interval of x where the graph is decreasing
\n" ); document.write( "

Algebra.Com's Answer #586580 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
for \"g%28x%29=3x%5E2-12x%2B6\"\r
\n" ); document.write( "\n" ); document.write( "a.find the values of the \"x\" intercepts\r
\n" ); document.write( "\n" ); document.write( "\"3x%5E2-12x%2B6=0\"\r
\n" ); document.write( "\n" ); document.write( "\"3%28x%5E2-4x%2B2%29=0\"...since \"3%3C%3E0\",then we need to find for what \"x\" is\r
\n" ); document.write( "\n" ); document.write( "\"%28x%5E2-4x%2B2%29=0\"..........use quadratic formula\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%28-4%29+%2B-+sqrt%28+%28-4%29%5E2-4%2A1%2A2+%29%29%2F%282%2A1%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%284+%2B-+sqrt%28+16-8+%29%29%2F2+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%284+%2B-+sqrt%28+8+%29%29%2F2+\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28cross%284%292+%2B-+cross%282%29sqrt%282+%29%29%2Fcross%282%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%282+%2B-+sqrt%282+%29%29+\"\r
\n" ); document.write( "\n" ); document.write( "solutions
\n" ); document.write( "\"x+=+2+%2Bsqrt%28+2+%29+\"-exact solution or \"x+=+3.41+\" approximately
\n" ); document.write( "or
\n" ); document.write( "\"x+=+2+-sqrt%28+2+%29+\" or \"x+=+0.59+\" approximately\r
\n" ); document.write( "\n" ); document.write( "b.state the coordinates of the \"y\" intercept
\n" ); document.write( "set \"x=0\" to find the \"y\" intercept \r
\n" ); document.write( "\n" ); document.write( "\"y=3%2A0%5E2-12%2A0%2B6\"
\n" ); document.write( "\"y=6\"\r
\n" ); document.write( "\n" ); document.write( "the \"y\" intercept is at (\"0\",\"6\")\r
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\n" ); document.write( "\n" ); document.write( "c.state the vertex\r
\n" ); document.write( "\n" ); document.write( "the equation for a parabola can also be written in \"vertex form\":\r
\n" ); document.write( "\n" ); document.write( "\"y+=+a%28x+-+h%29%5E2+%2B+k\"\r
\n" ); document.write( "\n" ); document.write( "In this equation, the vertex of the parabola is the point (\"h\",\"+k\").\r
\n" ); document.write( "\n" ); document.write( "\"y=%283x%5E2-12x%29%2B6\"...complete square\r
\n" ); document.write( "\n" ); document.write( "\"y=3%28x%5E2-4x%2B_%29-3%2A_%2B6\"\r
\n" ); document.write( "\n" ); document.write( "\"y=3%28x%5E2-4x%2B2%5E2%29-3%2A2%5E2%2B6\"\r
\n" ); document.write( "\n" ); document.write( "\"y=3%28x-2%29%5E2-12%2B6\"\r
\n" ); document.write( "\n" ); document.write( "\"y=3%28x-2%29%5E2-6+\"=> \"h=2\" and \"k=-6\"\r
\n" ); document.write( "\n" ); document.write( "so, (\"h\",\"+k\")=(\"2\",\"+-6\")\r
\n" ); document.write( "\n" ); document.write( "d.state the axis of symmetry\r
\n" ); document.write( "\n" ); document.write( "The line that passes through the vertex and divides the parabola into two symmetric parts is called the axis of symmetry. \r
\n" ); document.write( "\n" ); document.write( "here, that is \"x=2\"\r
\n" ); document.write( "\n" ); document.write( "e.state the direction of the parabola\r
\n" ); document.write( "\n" ); document.write( "since \"a=3\" and if \"+a+%3E+0\", the parabola opens \"upward\"\r
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\n" ); document.write( "\n" ); document.write( "f.decide whether there is a relative maximum or minimum, then state it\r
\n" ); document.write( "\n" ); document.write( "the parabola opens \"upward\" have an minimum\r
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\n" ); document.write( "\n" ); document.write( "g.graph the function accurately using the above information\r
\n" ); document.write( "\n" ); document.write( "\r
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\n" ); document.write( "\n" ); document.write( "h. state the domain\r
\n" ); document.write( "\n" ); document.write( "\"R\" (all real numbers)\r
\n" ); document.write( "\n" ); document.write( "i.state the range\r
\n" ); document.write( "\n" ); document.write( "{ \"y\" element \"R\" : \"y%3E=-6\" }\r
\n" ); document.write( "\n" ); document.write( "j.state the interval of \"x\" where the graph is increasing\r
\n" ); document.write( "\n" ); document.write( "(\"2\",\"infinity\")\r
\n" ); document.write( "\n" ); document.write( "k.state the interval of \"x\" where the graph is decreasing\r
\n" ); document.write( "\n" ); document.write( "(\"-infinity\",\"2\")\r
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