The formula of the distance between two points (x1, y1) and (x2, y2) is
Since the two given points are (-1, 5) and (2, 9), then
x1 = -1 and x2 = 2
y1 = 5 and y2 = 9
Substitute them in the formula above to find the distance between them
Remember (-) x (-) = (+)
Find the value of the square root
The distance between the 2 points is 5 units