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Algebra
Question

Consider the quadratic function: $$f ( z ) = 2 z ^ { 2 } - 8 z - 7$$ . Find the following for this parabola. A) The line of symmetry: B) The vertex: G) The vertical intercept is the point D) Find the coordinates of the two $$z$$ intercepts of the parabola and write them as a list, separated by commas: Round your rolues to two decimal plsces for this part, if the roots are irrational.

D) ((4+$$\sqrt{30}$$)/2,0)  , ((4 - $$\sqrt{30}$$)/2,0)