Question

What is the distance between the points -1 ,8 and 7,8 in the coordinate plane

Answer 1

Answer: 8 units

Step-by-step explanation:

To find the distance between 2 points, we want to use the formula $d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$. Since we are given the 2 points, all we have to do is plug them in.

$d=\sqrt{(7-(-1))^2+(8-8)^2}$      [parenthesis]

$d=\sqrt{(8)^2+(0)^2}$                        [exponent]

$d=\sqrt{64+0}$                               [add]

$d=\sqrt{64}$                                     [square root]

$d=8$

Now, we know the distance is 8 units.

Answer 2

I think the answer is 9?