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Mathematics 22 Online
OpenStudy (anonymous):

Given points C (6,1) and D (8,5), find vector CD as an ordered pair.

Parth (parthkohli):

It's more like you must find the change in x, change in y.

Parth (parthkohli):

So, what is the change in x?

OpenStudy (anonymous):

I have no idea how to solve this. If you know can you please explain.

Parth (parthkohli):

Yes, I can. If you are provided with two points, say, \(\rm (x_1, y_1),(x_2 , y_2)\) then the vector will be\[\rm \langle x_2 - x_1,y_2 - y_1\rangle\]

Parth (parthkohli):

Just like finding the slope.

Parth (parthkohli):

Do a thing: find the slope and don't simplify it... then I'd tell you what you could do.

Parth (parthkohli):

Yello!

OpenStudy (anonymous):

4/2

OpenStudy (anonymous):

Is that right?

OpenStudy (anonymous):

Vector CD = < Δx, Δy >

Parth (parthkohli):

Yes @DustinMHayes Yup @Chlorophyll That's what I told him ;)

Parth (parthkohli):

So, if you have the slope = 4/5, then the vector will be <5,4>

Parth (parthkohli):

If the slope is 4/2, then what will the vector be?

OpenStudy (anonymous):

@DustinMHayes Where are you? Be careful with the order of coordination!

OpenStudy (anonymous):

<5,4> is the answer then?

OpenStudy (anonymous):

The answer is <2,4>

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