Question

One point on a line is given the coordinate 5.3. A second point on the line has a coordinate of 8.7.

The distance between these points is __________ units.

Answer 1

3.2

Explanation:

The distance formula on a number line is

d= x2-x1

d= 8.7-5.3 =3.2

Answer 2

Answer: The distance between these points is 5 units.

Explanation:

We know that by Distance formula , the distance between two points (a,b) and (c,d) is given by :-

`D=√((d-b)^2+(c-a)^2)`

The given points = (5,3) and (8,7)

The distance between theses points will be :

`D=√((7-3)^2+(8-5)^2)\\\\\Rightarrow\ D=√((4)^2+(3)^2)\\\\\Rightarrow\ D=√(16+9)\\\\\Rightarrow\ D=√(25)=\pm5`

Since , Distance is always positive , it means the distance between the given points is 5 units.