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zarkam21 (zarkam21):
OpenStudy (andone2.0):
with what
OpenStudy (mathstudent55):
Here is a suggestion.
Use technology to graph them.
Then apply the vertical line test.
Nnesha (nnesha):
graph all the equations and then do vertical line test
if the line intersects the graph more than 1 then the equation doesn't represent a function
zarkam21 (zarkam21):
Okay let me graph them
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zarkam21 (zarkam21):
Okay so here is my graph
zarkam21 (zarkam21):
zarkam21 (zarkam21):
and I think the answers are c and d?
Nnesha (nnesha):
for example this
the vertical line intersects the graph 2 times so it's not a function
when line intersects 2 times that means x values are repeating
zarkam21 (zarkam21):
I think b and c?
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zarkam21 (zarkam21):
because they look like they are functions
Nnesha (nnesha):
OpenStudy (phi):
Use the vertical line test
(If a vertical line goes through the curve more than once, it's not a function)
also, you know lines y= mx
and parabolas, y = x^2
are functions
OpenStudy (phi):
if you see a y^2, that is a clue it's not a function
zarkam21 (zarkam21):
So b and D?
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Nnesha (nnesha):
yes. when you draw a line on A ,C graph you will see the line intersects the graph more than once
zarkam21 (zarkam21):
So are those the only and final answers?
Nnesha (nnesha):
yes y=x^2-2 and y=6x represents the function
zarkam21 (zarkam21):
Thank you so much
OpenStudy (mathstudent55):
|dw:1480437532392:dw|
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