Distance Formula

The distance between two points (x₁, y₁) and (x₂, y₂) is
d = √(x₂ - x₁)² + (y₂ - y₁)².

This is the distance formula.

The given points are (-3, 1) and (5, 4).

Then the distance d is,
x₂ - x₁, 5 - (-3)
square
plus,
y₂ - y₁, 4 - 1
square.

5 - (-3) = 5 + 3
4 - 1 = 3

5 + 3 = 8

8² = 64
+3² = +9

64 + 9 = 73

So d = √73 is the answer.