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can you please help me understand relations and functions.
Like how to figure out if an equation is a function or not a funcion.
for example:
1) 3x+2y=6,

2) x=y^2+2
3) y=square root of 1-x

thank you

  • trigonometry (not) -

    The equation in 1, after rearranging, can be considered y as a function of x or x as a function of y.
    2. expresses x as a function of y and
    3. expresses y as a function of x.

    I would say that they are all functions, but your teacher may have other ideas.

  • trigonometry (not) -

    ya i know that they are all functions but how am i supposed to figure that out?

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