Mathematica has a lot of list manipulation functions, and, also because I don't work with lists often, at times I'm a bit lost. I'll find a way, but I'm sure it's not the most efficient. Case in point, this list:

list = {{x -> -1, y -> 5}, {x -> -1, y -> 6}, {x -> -1, y -> 7}, {x -> 0, y -> 2}, 
 {x -> 0, y -> 3}, {x -> 0, y -> 4}, {x -> 0, y -> 5}, {x -> 0, y -> 6},  
 {x -> 0, y -> 7}, {x -> 1, y -> 2}, {x -> 1, y -> 3}, {x -> 1, y -> 4},  
 {x -> 1, y -> 5}, {x -> 1, y -> 6}, {x -> 1, y -> 7}, {x -> 2, y -> 3}, 
 {x -> 2, y -> 4}, {x -> 2, y -> 5}, {x -> 2, y -> 6}, {x -> 2, y -> 7}, 
 {x -> 3, y -> 4}, {x -> 3, y -> 5}, {x -> 3, y -> 6}, {x -> 3, y -> 7}, 
 {x -> 4, y -> 5}, {x -> 4, y -> 6}, {x -> 4, y -> 7}, {x -> 5, y -> 6}, 
 {x -> 5, y -> 7}, {x -> 5, y -> 8}, {x -> 6, y -> 7}, {x -> 6, y -> 8}, {x -> 7, y -> 8}}  

I just need the numerical data, then this function:

Transpose[{list[[All, 1]][[All, 2]], list[[All, 2]][[All, 2]]}]

gives me the desired result, but it doesn't look good, and I'm afraid of wearing out my [ and ] keys.

{{-1, 5}, {-1, 6}, {-1, 7}, {0, 2}, {0, 3}, {0, 4}, {0, 5}, {0, 6}, {0, 7}, 
 {1, 2}, {1, 3}, {1, 4}, {1, 5}, {1, 6}, {1, 7}, {2, 3}, {2, 4}, {2, 5}, 
 {2, 6}, {2, 7}, {3, 4}, {3, 5}, {3, 6}, {3, 7}, {4, 5}, {4, 6}, {4, 7}, 
 {5, 6}, {5, 7}, {5, 8}, {6, 7}, {6, 8}, {7, 8}}  

What's the best way to extract the data from the list?