Question

If A = (-1,-3) and B = (11,-8), what is the length of AB?

A. 14 units
B. 13 units
C. 11 units
D. 12 units
SUBMIT
A

Answer 1

B

Explanation:

Use the distance formula:

`d=√((x_2-x_1)^2+(y_2-y_1)^2)`

Let (-1,-3) be
`x_1` and
`y_1`, while (11,-8) be
`x_2` and
`y_2`.

Thus:

`d=\sqrt{((11)-(-1))^2+((-8)-(-3))^2`

`d=√(12^2+(-5)^2)`

`d=√(144+25) =√(169) =13`