Given: S (-1, 8) and T (7, -9) What is the length of ST?
S (-1, 8) and T (7, -9)
ST = √ [(-1 - 7)^2 + (-9 -8)^2 ] = √ [ (-8)^2 + (-17)^2 ] =
√ [64 + 289] = √353 = about 18.8 units
