Mathematics
21 Online
katherine:
math
Join the QuestionCove community and study together with friends!
Sign Up
katherine:
katherine:
Am I correct?
AngeI:
Dont tag Ultri, his only skill is tagging other people e.e
AngeI:
Correct c:
katherine:
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
katherine:
-4 -2 2
dude:
x-values of all points!
katherine:
C?
dude:
Yup!
katherine:
can you help me on a couple more?
Join the QuestionCove community and study together with friends!
Sign Up
dude:
Sure :D
katherine:
dude:
Well, where is it going down?
katherine:
D
dude:
Yup :P
Join the QuestionCove community and study together with friends!
Sign Up
katherine:
katherine:
@dude jayyyyyyy
dude:
Yup
katherine:
can you help me on 2 more?
dude:
Sure
Join the QuestionCove community and study together with friends!
Sign Up
katherine:
dude:
Yup
\[slope=\frac{rise}{run}\]
katherine:
I WAS RIGHTTTT
dude:
Yup :P
katherine:
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
dude:
Kk
katherine:
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
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
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
Join the QuestionCove community and study together with friends!
Sign Up
katherine:
okokok time to submit, are you ready
dude:
Yes :P
katherine:
90
dude:
e.e
katherine:
okh my godddddddddd!!!!
Join the QuestionCove community and study together with friends!
Sign Up
dude:
What was wrong ;-;
katherine:
the graph
katherine:
tysmmmm
dude:
I was hoping to get 100 ;-;