Please help me ill give you the crown thing if its right

What are the soultion(s) to the quadratic equation 40- x^2=0

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.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?