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My teacher makes us use this: => and <=> to symbolize the steps we use to find our answers, but I don't understand the difference. Can someone please explain it?

  • math -

    Are you certain that is what the symbols are for? I would ask your teacher again. using those symbols for this is non-standard practice.

  • math -

    Yes, he said that the one with one arrow means "if and only if" and then the other one, I have no clue. And I feel like he changes when he uses them so I'm confused hahah. I would just use and equals sign.

  • math -

    Standard: IFF means if and only if.

  • math -

    i need to write and equation in the form y=mx+b for a line with slope 3,5and y-intercept0,4

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