Question 33
Coordinate GeometryWhat is the value of r if the distance between the points (4, 2) and (1, r) is 3 units?
- A.1
- B.2
- C.3
- D.4
Show the answer and explanation
Answer: B (2)
Explanation
(1 − 4)2 + (r − 2)2 = 9 gives (r − 2)2 = 0, so r = 2.
What is the value of r if the distance between the points (4, 2) and (1, r) is 3 units?
Answer: B (2)
(1 − 4)2 + (r − 2)2 = 9 gives (r − 2)2 = 0, so r = 2.