Without graphing, how do you figure out points to an equation that isn't a function ?

#53. In the second part after "So, let delta = epsilon" how do they go from |-(x+5)|<E to |-(x-5)-10|<E? In the first part is there a name for the rule/property used to f...

BlaiseJames asked Jun 21

by BlaiseJames

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retsub12 asked Jun 21

How do I integrate t^z*ln(t) dt from x to y if z is an interger with the condition that 0<x<y

retsub12 asked Jun 21

by retsub12

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atasever_vildan asked Jun 21

If 0=28 and 32=37, what's 10? How do I calculate this? A rule of three seems to need an extra step.

atasever_vildan asked Jun 21

by atasever_vildan

Flor_Rubio · Answer 1 · 2022-06-21T14:42:00+0000

Are you asked if you can either prove or disprove it being a function, or are you only asked to show it’s not a function, because it’s definitely possible to express y as a function of x here.

Kaxe_9 · Answer 2 · 2022-06-21T14:42:00+0000

The main thing with a function is that every x coordinate maps to exactly 1 y coordinate. For an equation to not have a function, it means that there are two (or more) different y values that share the same x value.

So find some value of x you can input which results in two or more possible solutions for y.

Without graphing, how do you figure out points to an equation that isn't a function ?

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