XY with endpoints X(1,2) and Y(4,5)

Answer 1

I assume you meant to ask for the distance between the points (1,2) and (4,5). Use the distance formula.

d = √[(x₁ - x₂)² + (y₁ - y₂)²]

x₁ = 1

y₁ = 2

x₂ = 4

y₂ = 5

Plug in the numbers and get d.