Question

If the distance between points A(4,k) and B(7,6) is 5 units then find the value of k.

Answer 1

Answer:

√(x2-x1)²+(y2-y1)²

√(7-4)²+(6-k)² =5

9+36+k²-12k =5²

k²-12k +45 =25

k²-12k +20

k²-10k-2k+20

k(k-10)-2(k-10)

(k-2)(k+10)

k=2 or k=-10

Answer 2

Hey mate,

Here is it answer with the attachment..

Hope it helps...

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