Consider the quadratic function $\displaystyle {f{{\left({x}\right)}}}={2}{x}^{{2}}-{2}{x}-{60}$.

Determine the following: (enter all numerical answers as integers or decimals. Round your answer to two decimal places as needed.):

The $\displaystyle {x}$-intercept's are .
Write the answer as two ordered pairs separated by a comma.

The $\displaystyle {y}$-intercept is .
Write the answer as an ordered pair.

The vertex is .
Write the answer as an ordered pair.

The line of symmetry has the equation .
Write the line of symmetry as an equation.