Question

Point A is located at (-8, 3). Point C is located at point (12, -4). Find point B if it is (2/5) the distance from point A to point B

Answer 1

@wio

Answer 2

find the distance between the x coords and the y coords, then takes 2/5 of those distances and then add them to the A coords to get the B coords.

Answer 3

I am confused as to how I do that.

Answer 4

What are x coords of A and C?

Answer 5

12 and -8

Answer 6

So what is \(C_x- A_x\)?

Answer 7

...

Answer 8

I wish I knew what that meant.

Answer 9

The x coordinate of C subtracting x coordinate of A

Answer 10

I feel as though it is going to lead to this:
sqrt[(12 - 8)2 + (-4 - 3)2]
sqrt[(4)2 + (-7)2]
sqrt[16 + 49]
sqrt[65]
AC = 8.06

Answer 11

sure, you can do that. What is 2/5 of AC?

Answer 12

.4?

Answer 13

no

Answer 14

Wait, 3.224?

Answer 15

sure.

Answer 16

why did you put 12-8 and not 12-(-8)?

Answer 17

what class is this?

Answer 18

Oh, so 2/5 of the answer is 8.472 because the actual decimal is 21.18

Answer 19

It is Geometry.

Answer 20

Can't believe I didn't see that error.

Answer 21

Okay, so let

21.18 = sqrt[(x - (-8))2 + (y - 3)2]

Answer 22

I mean

8.472 = sqrt[(x - (-8))2 + (y - 3)2]

Answer 23

Ok...

Answer 24

This is all points that are 8.472 away from A.

Answer 25

To make sure it is on the same line as AC, you need to find that line y=mx+b and put the mx+b part in for y.

Answer 26

How do I do that?

Answer 27

@LastDayWork

Answer 28

"...Find point B if it is (2/5) the distance from point A to point B..."
Please rephrase this statement.

Answer 29

That is how the question is phrased in the actual problem.

Answer 30

How would I rephrase it.

Answer 31

I am sorry, I can't comprehend the question. :(
Lemme tag a teacher @agent0smith

Answer 32

btw nice pic. ^

Answer 33

:)

Answer 34

@LadyKatsaTheGraceling @ash2326