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OpenStudy (anonymous):
is it undefined or 0?
OpenStudy (anonymous):
The graph of
x= a number and
y= a number
can be remembered by the acronym
H.orizontal
O.=slope (zero)
Y.= a number
V.ertical
U.ndefined=slope
X.=a number
OpenStudy (anonymous):
In this case, is you question in terms of y or x?
OpenStudy (anonymous):
x
OpenStudy (anonymous):
????? @doulikepiecauseidont
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OpenStudy (anonymous):
is it vertical (across) or horizontal?
OpenStudy (anonymous):
vertical. so the slope is undefined.
OpenStudy (anonymous):
vertical
OpenStudy (anonymous):
ok thanks :)
OpenStudy (anonymous):
Remember, this would be the VUX
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OpenStudy (anonymous):
|dw:1405310681438:dw|
OpenStudy (anonymous):
|dw:1405310706929:dw|
OpenStudy (anonymous):
thats horizontal
OpenStudy (anonymous):
no that's vertical.
OpenStudy (anonymous):
so y is always horizontal?
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OpenStudy (anonymous):
correct. when graphing something like y=3
OpenStudy (anonymous):
what about y =4 is that undefined
OpenStudy (anonymous):
no that would have a slope of 0.
OpenStudy (anonymous):
why
OpenStudy (anonymous):
Because slope is rise over run if you are just going up you would have 4/0 which has 0 on the bottom of a fraction
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OpenStudy (anonymous):
ohh ok
OpenStudy (anonymous):
Becaue \[\Large y=4\]
is actually \[\Large y=0x+4\]
If I plug in any value for x, I'm going to have to multiply it by 0, which is just 0, and we don't need the 0
OpenStudy (anonymous):
what about something like this
OpenStudy (anonymous):
Find the slope of the line passing throug the points (2, -5) and (4,-6).
OpenStudy (anonymous):
there's a formula to this.
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OpenStudy (anonymous):
m=\[\Large {y_2-y_1 \over x_2-x_1}\]
OpenStudy (anonymous):
Where m=slope and x1,y1 is one of the points (it doesn't matter which one) and x2,y2 is the other point