for (-4, 8) first you would want to find the absolute value of -4 which is 4 then you would add 4+8 which equals 12 that is the distance between (-4, 8)
for (-6, 5) first you would have to find the absolute value of -6 which is 6 then you can add 6+5 which equals 11 that is the distance for (-6, 5)