Question

What is the distance between P(0,4) and Q(3,0)

Answer 1

Plot this out on a graph and you'll get your answer of 5.

Answer 2

Hey!
The distance formula is the:
$\sqrt{(x_2}- x_{1})^2 + {(y_2}- y_{1})^2$
so 3-0 is 3 and squared is 9
0-4 is -4 and squared it is 16
add those and you get 25 
the square root of 25 is 5
5 is the distance
Hope this helps!