1-4, prove that RS and PQ are equivalent by showing that they represent the same vector. 1. R = (4, 7), S = (-1, 5), P = (0, 0), and Q = (3,-2) 2. R = (7,-3), S = (4, 5), P = (0, 0), and Q = (-3, -2) 3. R = (2, 1), S = (0, -1), P = (1, 4), and Q = (-1,2) 4. R = (-2, -1), S = (2, 4), P = (-3, 1), and Q = (1, 4) In Exercises 5-12, let P = (-2, 2), Q = (3, 4), R = (-2, 5), and S=(2, -8). Find the component form and magnitude of the vector 5. PQ 7. QR 6. RS 8. PS