Question

suppose point j has coordinate of -2 and jk=4 then what is the possible coordinate(s) for k? a)4, b)2 or -4, c)-4, d) 2 or -6

Answer 1

Answer on Question # 41652– Math - Geometry

Suppose point $j$ has coordinate of -2 and $jk = 4$ then what is the possible coordinate(s) for $k$? a) 4, b) 2 or -4, c) -4, d) 2 or -6

Solution:

Since, $jk = |j - k|$, then

$$\begin{array}{l} | - 2 - k | = 4, \\ | 2 + k | = 4 \\ 2 + k = 4 \quad \text{or} \quad 2 + k = -4 \\ k = 2 \quad \text{or} \quad k = -6. \end{array}$$

Answer: d) 2 or -6.

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