find y if the distance between D( y,7) and E (1, 15) is 10. (complete the following activity.
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x1 = x, y1 = 7, x2 = 1, y2 = 15
By distance formula,
∴ 1 – x = ± 6 ∴ 1 – x = 6 or l – x = -6 ∴ x = – 5 or x = 7
∴ The value of x is – 5 or 7.
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i have only this much sorry
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