Find the Distance Between Two Points (-1,-6) and (8,6)

$(- 1, - 6)$ and $(8, 6)$

Step 1

Use the distance formula to determine the distance between the two points.

$Distance = \sqrt{{(x_{2} - x_{1})}^{2} + {(y_{2} - y_{1})}^{2}}$

Step 2

Substitute the actual values of the points into the distance formula.

$\sqrt{{(8 - (- 1))}^{2} + {(6 - (- 6))}^{2}}$

Step 3

Simplify.

Multiply $- 1$ by $- 1$ .

$\sqrt{{(8 + 1)}^{2} + {(6 - (- 6))}^{2}}$

Add $8$ and $1$ .

$\sqrt{9^{2} + {(6 - (- 6))}^{2}}$

Raise $9$ to the power of $2$ .

$\sqrt{81 + {(6 - (- 6))}^{2}}$

Multiply $- 1$ by $- 6$ .

$\sqrt{81 + {(6 + 6)}^{2}}$

Add $6$ and $6$ .

$\sqrt{81 + 12^{2}}$

Raise $12$ to the power of $2$ .

$\sqrt{81 + 144}$

Add $81$ and $144$ .

$\sqrt{225}$

Rewrite $225$ as $15^{2}$ .

$\sqrt{15^{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$15$

Step 4