1. ©G Dear2008 – Not to be sold/Free to use
Stage 4
Year 9
Coordinate
Geometry
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Geogebra
Distance between
Two Points
(Formula)
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©G Dear2008 – Not to be sold/Free to use

2. Distance Formula d = (x2-x1)2+(y2-y1)2 = (7 - 3)2+(5 --2)2 = 42 + 726
(7,5)
= (7 - 3)2+(5 --2)2 5 4 = 3 2 = 1
(as surd)
Exact -1 1 2 3 4 5 6 7 8
= 65 -1 -2
(3,-2)
(x1,y1)
≈ 8.06
(approx) -3
Distance from (3,-2)
to (7,5)?
GeoGebra

3. Distance Formula Distance from (12,2) to (4,5)? d = (x2-x1)2+(y2-y1)2
= (4 - 12)2+(5 -2)2
= (-8)2 + 32 =
(as surd)
Exact
= 73

4. Distance Formula Distance from (6,2) to (7,5)? d = (x2-x1)2+(y2-y1)2
= (7 - 6)2+(5 -2)2 = =
(2 decimal places)
Approximate
= 10
= 3.16