Question

Find the distance BF for the points B(1,-1) and F(-3,5)

Answer 1

Use the distance formula:

`√((x_2 - x_1)^2 + (y_2 - y_1)^2)`

Plug in the given coordinates:

`√((-3-1)^2 + (5-(-1))^2)`

Simplify:

`√((-3-1)^2 + (5+1))^2)`


`√(-4^2+ 6^2)`


`√(16+36)`


`√(52)`
You can leave it as:
`√(52)`or in decimal form as: 7.2