Quick i believe i know the answer : ) segment ab has point a located at (8, 9). if the distance from a to b is 10 units, which of the following could be used to calculate the coordinates for point b 10 = square root of the quantity of x plus 8 all squared plus y plus 9 all squared 10 = square root of the quantity of x plus 9 all squared plus y plus 8 all squared 10 = square root of the quantity of x minus 8 all squared plus y minus 9 all squared 10 = square root of the quantity of x minus 9 all squared plus y minus 8 all