Question

Find the distance CB for the points c(8, -6) and B(6, 7).
A) distance = √198
B) distance = √197
C) distance = √172
D) distance = √173

Answer 1

So now that Parth posted the distance formula for you, why don't you use it?

Answer 2

Subtract the x coordinates of the points. Subtract the y coordinates of the points. What do you get?

Answer 3

I've never done this stuff so idk.....

Answer 4

In the ordered pair, (8,6) which is the x?

Answer 5

8?

Answer 6

In the ordered pair (6,7) which is the x?

Answer 7

6

Answer 8

Subtract those two numbers. What do you get?

Answer 9

2

Answer 10

Remember that number. We'll come back to it.
In the ordered pair (8,-6) what is the y?

Answer 11

-6

Answer 12

In the ordered pair (6,7) what is the y?

Answer 13

7

Answer 14

Subtract those two numbers. What do you get?

Answer 15

Am I doing -6 - 7 or 7 - 6?

Answer 16

Doesn't matter if you do -6-7 or 7-(-6)

Answer 17

Because you are going to square it anyway.

Answer 18

-6 - 7 = -13
7 - -6 = 1

Answer 19

7-(-6)=7+6=13

Answer 20

What was the other number you rememberes?

Answer 21

remembered?

Answer 22

8 - 6 = 2

Answer 23

Square the 2 and square the 13. What do you get?

Answer 24

\[2^2= ???\]
\[13^2=???\]

Answer 25

2² = 4 & 13²= 169

Answer 26

Add them together. What do you get?

Answer 27

do I add those together? Which make 173?

Answer 28

Take the square root and that is your distance.

Answer 29

So it's 173?

Answer 30

That's why I drew you the picture in the question you closed. It's just a special case of the Pythagorean Theorem.

Answer 31

Did you take the square root?

Answer 32

http://openstudy.com/study#/updates/4fcc9e5ce4b0c6963ad78c7f

Answer 33

Umm, how do you take the square root?