This is a math question find the complement of 50 degree​

When turned about its axis of rotation, which shape could have created this three-dimensional object?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1