Distance Between Two Points
The distance between 2 points on a graph is really the hypotenuse of a right-angled triangle.
Pythagoras's Rule is used to find the distance between 2 points on a graph.
Distance = √(x2 – x1) 2 + (y2 – y1) 2
Example One - Distance between Points
What is the distance between the points (1,5) and (4,9)?
Answer:
(x1, y1) = (1,5)
(x2, y2) = (4,9)
Distance = √(x2 – x1) 2 + (y2 – y1) 2
= √(4 – 1) 2 + (9 – 5) 2
= √25
= 5
Questions - Distance between Points
Q1. (2,5) and (7,17)
Q2. (2,1) and (4,5)
Answers
A1. 13
A2. 4.5
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