Question

KM is a straight line of 13 units. If K has coordinates (2, 5) and M has coordinates (x, -7), find the possible values of x.​

Answer 1

Step-by-step explanation:

Given : K(2,5) M(x,-7) KM = 13 units

By distance formula,

KM² = (x - 2)² + ( -7 -5)²

13² = x² + 4 - 4x +144

x² - 4x - 21 = 0

by solving we have x = 7, -3

Answer 2

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