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March 10th, 2010, 06:31 PM   #1
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Slope of a tangent

A quadratic function is defined by f( x )= x^2 + 2x + 3. A linear function is defined by g( x )=mx-6. What value(s) of the slope of the line would make it a tangent to the parabola? No calculus allowed.
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March 11th, 2010, 03:49 AM   #2
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Re: Slope of a tangent

The equation f(x) = g(x) must have exactly one solution for x.
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