Question

What is the distance between points (4,7) and (-3,6) using the Pythagorean theorem

Answer 1

A² + b² = c². 
Make a triangle with the points on a grid. 
One leg is 7 units and the other is 1 unit.
7² is 49 and 1² is 1. 
49 + 1 = 50 
√50 ≈ 7.071. 
Hope this helps!