# Question 28c14

May 11, 2017

Presuming you are asking for the distance between the two points use the distance formula derived from Pythagoras theorem

#### Explanation:

Distance = sqrt (("x2" - "x1")^2 + ("y2" - "y1")^2

Now, we just have to substitute the values in for the variables:

Distance = sqrt (("x2" - "x1")^2 + ("y2" - "y1")^2
= sqrt (("-1" - "1")^2 + ("5" - "-4")^2
= sqrt ((-2)^2 + (9)^2
= sqrt ((4 + 81)#
= $\sqrt{85}$
$\approx 9.22$

$\therefore$ The distance between A and B is $9.22$ units

All the best!