Which is not a function? Is the relation y^2+5x=8 a function? Explain.

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Which is not a function? Is the relation y^2+5x=8 a function? Explain.

Mathematics
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in the standard definition; No
if y axis is up and xaxis is left; this aint a function
The graph of a function can never cut the y-axis in two places. As this contans y to the powewr 2 it implies that the graph will cut in two places the y-axis. Hence not a function.

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Other answers:

it can cut the y axis twice; there is no reason to suggest that y is not the input and x the output; it is only by convention that x is left and right, while y is up and down
Run a vertical line across athe graph of a function and it will only hit the graph in one place at a time, fact.
thats not a fact, its a convention; replace x and y with r and t, then what?
Amistre, have you been here all day?
just got back on actually ;)
I take your point, it is a little pedantic but the conventions of x-axis and y-axis as we both understand them allows my answer to hold.
it does :) and it is lol
Which country are you operating from?
y^2+5x=8 x = (-y^2 +8)/2 is a function the other way it is not ....
usa, florida
..../5
OK, France and here it is way past the time for bed so bonsoiree my friend
Ciao ;)

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