Question

Suppose point j has coordinate of -2 and JK=4. Then what is the possible coordinate(s) for K?

Answer 1

Suppose point $j$ has coordinate of -2 and $JK = 4$. Then what is the possible coordinate(s) for K?

Solution:

Write formula for length of the segment:

$$D = \left| x _ {2} - x _ {1} \right|$$ $$x _ {1} = - 2$$ $$D = 4$$

Consider the two cases:

1) $x_{2} - x_{1} = 4$

$$x _ {2} = 2$$

2) $x_{2} - x_{1} = -4$

$$x _ {2} = - 6$$

Answer: 2;-6.