Question

find the distance between the pair of points $(-4,-7)$ and $(4,-6)$. if necessary, express the answer in simplified radical form and then round to two decimal places
the distance between the given points is $square$ units.
(simplify your answer. type an exact answer, using radicals as needed.)
express the distance rounded to two decimal places if the exact simplified answer contains radicals.
select the correct choice below and, if necessary, fill in the answer box to complete your choice
a. the distance between the given points is approximately $square$ units.
(type an integer or decimal rounded to two decimal places as needed.)
b. the exact simplified form does not contain radicals.

Explanation:

Step1: Recall distance formula

For points $(x_1,y_1)$ and $(x_2,y_2)$, distance $d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Step2: Substitute given points

Let $(x_1,y_1)=(-4,-7)$ and $(x_2,y_2)=(4,-6)$.
$d=\sqrt{(4-(-4))^2+(-6-(-7))^2}=\sqrt{(8)^2+(1)^2}$

Step3: Calculate inside the square root

$d=\sqrt{64+1}=\sqrt{65}$

Step4: Compute decimal approximation

$\sqrt{65}\approx8.06$

Answer:

The distance between the given points is $\sqrt{65}$ units.
A. The distance between the given points is approximately $8.06$ units.