Question

What’s the distance formula

Answer 1

The distance formula is really just the Pythagorean Theorem in disguise.

Explanation:

AB=√(x2−x1)2+(y2−y1)2

Answer 2

Explanation:

`\text{Let}\ A(x_1,\ y_1)\ \text{and}\ B(x_2,\ y_2).\ \text{Then the distance between}\ A\ \text{and}\ B\ \text{is:}\\\\|AB|=√((x_2-x_1)^2+(y_2-y1)^2)\\\\Example:\\\\A(2,\ 5),\ B(-1,\ 1)\\\\|AB|=√((-1-2)^2+(1-5)^2)=√((-3)^2+(-4)^2)=√(9+16)=√(25)=5`