Posted by terra on .
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 
bobpursley,
Are you certain that is what the symbols are for? I would ask your teacher again. using those symbols for this is nonstandard practice.

math 
terra,
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 
bobpursley,
Standard: IFF means if and only if.

math 
joeu,
i need to write and equation in the form y=mx+b for a line with slope 3,5and yintercept0,4