The correct answer is C (14.21)
Explanation:
(We can use the Distance Formula to find a vector’s magnitude)
Let (x1, y1) be (1, 1) and (x2, y2) be (-8, 12)
Distance
= sqrt((x2 - x1)^2 + (y2 - y1)^2)
= sqrt((- 8 - 1)^2 + (12 - 1)^2)
= sqrt((-9)^2 + 11^2)
= sqrt(81 + 121)
= sqrt(202)
≈ 14.21
