What are the two x- intercepts of this quadratic equation f(×)=3x^2-12x-1?

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

How does the graph of y = 3x compare to the graph of y = 3-x?