6 (1 point)
(a) Find the slope of the tangent line to the parabola y = x2 + 4x at the point (-5,5).
12
(b) Find the equation of the tangent line in part (a).
(a) m =
(b) y=

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

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