Prealgebra (7th Edition)

$(-3,0),(0,-3),(4,-7)$
To find the missing value, we plug in the value that we are given into the given equation and solve. $(?,0)\\?+0=-3\\?=-3\\(-3,0)$ $(0,?)\\0+?=-3\\?=-3\\(0,-3)$ $(4,?)\\4+?=-3\\?=-7\\(4,-7)$