document.write( "Question 140475: for the derivative value I need to show tongant line in graph? Thanks\r
\n" ); document.write( "\n" ); document.write( "Given y=X^2\r
\n" ); document.write( "\n" ); document.write( "at x = -2\r
\n" ); document.write( "\n" ); document.write( "So far I have \r
\n" ); document.write( "\n" ); document.write( "At X=-2, the derivative is 2(-2)= 0 (please show graph). \n" ); document.write( "

Algebra.Com's Answer #102283 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
f(x)=x^2
\n" ); document.write( "dy/dx = 2x
\n" ); document.write( "f'(-2) = -4 (slope of y=x^2 at (-2,4)
\n" ); document.write( "--------
\n" ); document.write( "Equation of line with m=-4 passing thru (-2,4)
\n" ); document.write( "4 = -2*-4 + b
\n" ); document.write( "b = -4
\n" ); document.write( "----------
\n" ); document.write( "EQUATION:
\n" ); document.write( "y = -4x -4
\n" ); document.write( " $\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2C-4x-4%29\"$
\n" ); document.write( "=============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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