MathematicsMedium128×since 2002Q5535If a Δ\DeltaΔABC has vertices A(–1, 7), B(–7, 1) and C(5, –5), then its orthocentre has coordinates :A(–3, 3)B(3, –3)C(35,−35)\left( {{3 \over 5}, - {3 \over 5}} \right)(53,−53)D(−35,35)\left( { - {3 \over 5},{3 \over 5}} \right)(−53,53)Check answerSkip