Question

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Find y if the distance between D(y, 7) and E( 1, 15) is 10.
Solution :
By distance formula, d(D, E) =___ (Formula)
10=V (1 - y)2 + 82
On squaring both sides, 100 =___
(1 - y)2 = 36
1-y=6 or 1-y=-6
::y=O__or y = ___​

Answer 1

Answer:

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Answer 2

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Find y if the distance between D(y, 7) and E( 1, 15) is 10.

Solution :

By distance formula, d(D, E) =___ (Formula)

10=V (1 - y)2 + 82

On squaring both sides, 100 =___

(1 - y)2 = 36

1-y=6 or 1-y=-6

::y=O__or y = ___