document.write( "Question 200492: Hello everyone, Im struggling with some graphing problems and would greatly appreciate some help.I need to find the y-intercept, the x intercepts and any turning point of the following function: y = -2x -7x +4\r
\n" ); document.write( "\n" ); document.write( "Any help and explanations would be great.
\n" ); document.write( "Thanks, -NIck \n" ); document.write( "
Algebra.Com's Answer #150774 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
y = -2x -7x +4
\n" ); document.write( "y=-9x+4
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+-9x+%2B4%29+\" (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -9x +4).
\n" ); document.write( "Solution (4/9,4).
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\n" ); document.write( "y=2x^2-3x-1
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+2x%5E2+-3x+-1+%29+\" (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 2x^2 -3x -1).
\n" ); document.write( "y=-1
\n" ); document.write( "Using the quadratic equation \"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" we get:
\n" ); document.write( "x=(3+-sqrt[-3^2-4*2*-1])/2*2
\n" ); document.write( "x=(3+-sqrt[9+8)/4
\n" ); document.write( "x=(3+-sqrt17)/4
\n" ); document.write( "x=(3+-4.123)/4
\n" ); document.write( "x=(3+4.123)/4
\n" ); document.write( "x=7.123/4
\n" ); document.write( "x=1.78 ans.
\n" ); document.write( "x=(3-4.123)/4
\n" ); document.write( "x=-1.123/4
\n" ); document.write( "x=-.28 ans.
\n" ); document.write( "Answer(1.78 & -.28,-1).
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