Question

b) The distance between the points A(5, 2) and B(-7, y) is 13 units. Find the possible values of y​

Answer 1

13 ²= [5 -(-7)]²+(2-y)²

169 = 12² + (2-y)²

169 - 144 = (2-y)²

(2-y)²=25

2-y = 5

y = -3

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