What is the length of ab if a and b have coordinates of a (-3,7) and b (7,3)

AB = √116 ≈ 10.77

Step-by-step explanation:

Use the formula that calculate the distance between two points:

L means length

For the x and y, substitute a coordinate value that you will label as set 1 or 2.

For example:

A (-3, 7) will be set 1. x₁ = -3    y₁ = 7

B (7 , 3) will be set 2. x₂ = 7   y₂ = 3

Substitute the points into the formula to find the length AB. Simplify.

  Solve inside the brackets first

     Square each term under the root

   Add under the root

    Final exact answer is radical (root) form

     Final approximate or rounded answer to 2 decimals

The length of AB is the squareroot of 116, or about 10.77 units.

step-by-step explanation: