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Mathematics 21 Online
katherine:

math

katherine:

1 attachment
katherine:

Am I correct?

AngeI:

Dont tag Ultri, his only skill is tagging other people e.e

AngeI:

Correct c:

katherine:

1 attachment
katherine:

So true lol

AngeI:

Which one do you think it is?

AngeI:

you Oreos

katherine:

oh my

dude:

Look at the x-values @katherine XD

katherine:

-4 -2 2

dude:

x-values of all points! tyaqXpr2TX68laABsVnZ2w.png

katherine:

C?

dude:

Yup!

katherine:

can you help me on a couple more?

dude:

Sure :D

katherine:

1 attachment
dude:

Well, where is it going down?

katherine:

D

dude:

Yup :P

katherine:

1 attachment
katherine:

@dude jayyyyyyy

dude:

Yup

katherine:

can you help me on 2 more?

dude:

Sure

katherine:

1 attachment
dude:

Yup \[slope=\frac{rise}{run}\]

katherine:

I WAS RIGHTTTT

dude:

Yup :P

katherine:

1 attachment
dude:

Hmmm is the car at the starting point?

katherine:

no?

dude:

Right, so it isn't B

katherine:

B is crossed out

dude:

Which answers have you eliminated beside B? ~Process of elimination :P

katherine:

D

dude:

D is crossed out?

katherine:

wait. no

katherine:

wait.. yes?

dude:

Well the car does have a constant function at portion J

katherine:

okay. So D is still on

dude:

Yes, what about A and C?

katherine:

I think it could c?

dude:

If you were driving at the same rate, would you still be the same distance away from your destination?

katherine:

A

dude:

No, it is at the same distance from its destination |dw:1513208992259:dw|

katherine:

okay then it has to be D

dude:

Yes

katherine:

lool

katherine:

one more and we are done

dude:

Kk

katherine:

1 attachment
dude:

Well we have to find the slope, we can do \[\frac{y_2-y_1}{x_2-x_1}\\ Using~2~points\]

katherine:

was I right?

dude:

No

katherine:

bc the line is pointing at 90

dude:

Its asking for the speed, not the original distance (which is y)

katherine:

D?

dude:

If we find the slope it would tell us the answer immediately, lets get 2 points (0, 90), (1, 135)

katherine:

So, B is gone

dude:

Yes B and D are eliminated

katherine:

now we have a or c

dude:

\[(0, 90),~(1,135)\\\color{red}{(x_1, y_1),(x_2, y_2)}\] \[\frac{135-90}{1-0}=\boxed{45}\]

katherine:

SO, A x'D

dude:

Yes

katherine:

okokok time to submit, are you ready

dude:

Yes :P

katherine:

90

dude:

e.e

katherine:

okh my godddddddddd!!!!

dude:

What was wrong ;-;

katherine:

the graph

katherine:

tysmmmm

dude:

I was hoping to get 100 ;-;

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