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Solving graphically, maxima and minima and line of symmetry.

Use the graph of y = x² + 4x - 5 to answer the following:

 

a) Without solving the equation, use the graph to determine the solution(s) to the equation x² + 4x - 5 = 0 ?

b) Does this function have a maximum or a minimum?

c) What are the coordinates of the vertex in (x, y) form?

d) What is the equation of the line of symmetry for this graph?

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