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3) Using your graphing calculator, create a graph of the function f(x) = x2 + 4x + 3 What is the vertex? What are the roots? What is the equation of the axis of symmetry?

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Answer:

Step-by-step explanation:

Input the function f(x) = x^2 + 4x + 3 and graph it (using the calculator) for the interval [-5, 5].  The roots are the x values at which this graph crosses the x axis and are {-3, -1).  The axis of symmetry is the vertical line through x = -2.

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