Question

8.
Find the distance between points A and B, if Ais (-1,-2) and B is (8,10).

Answer 1

15 units

Explanation:

Calculate the distance d using the distance formula

d =
`\sqrt{(x_(2)-x_(1))^2+(y_(2)-y_(1))^2 }`

with (x₁, y₁ ) = A(- 1, - 2) and (x₂, y₂ ) = B(8, 10)

d =
`√((8+1)^2)+(10+2)^2`

=
`√(9^2+12^2)`

=
`√(81+144)`

=
`√(225)`

= 15