How do you come up with the number 6 using a math equation that includes -2,-3,-4 and 5

Which function has the same domain as y=2x

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2