Question

What is the distance between `(-12,4)` and `(9,3)`?

Answer 1

`d = 21.023`

Explanation:

The distance formula is `d=sqrt((y_2-y_1)^2 + (x_2-x_1)^2)`

`(-12,4) and (9,3)`

`x_1 = -12`
`y_1 = 4`
`x_2 = 9`
`y_2 = 3`

`d=sqrt((y_2-y_1)^2 + (x_2-x_1)^2)`
`d=sqrt((3-4)^2 + (9-(-12))^2)`
`d=sqrt((-1)^2 + (21)^2)`
`d=sqrt(1 + 441)`
`d=sqrt(442)`
`d=21.023`