If Q (0, 1) is equidistant from P (5, - 3) and R (x, 6), find the values of x. Also find the distance QR and PR.
PQ = QR
41 = x2 + 25 16 = x2 x = ±4 Therefore, point R is (4, 6) or ( - 4, 6). When point R is (4, 6),