Which variable is the independent variable--the variable that was controlled by the researchers? is the independent variable on the x-axis or the y-axis?

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

If m 17 27 90 63 ** picture is attached

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.