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?

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.

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.

Standard: IFF means if and only if.

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

Sure! The symbols "=>" and "<=>" are often used in mathematics and computer science to represent logical implications and logical equivalence, respectively.

The symbol "=>" (read as "implies" or "leads to") is used to denote a logical implication. It is typically used to express that if one statement or condition is true, then another statement or condition must also be true. This can be thought of as a cause-and-effect relationship.

For example, if we have the statement "If it is raining, then the ground is wet," we can express it as "It is raining => the ground is wet." This means that if the condition "it is raining" is satisfied, the resultant condition "the ground is wet" must also be true.

On the other hand, the symbol "<=>" (read as "is equivalent to" or "if and only if") is used to denote logical equivalence. It indicates that two statements or conditions are both true or both false. In other words, if one condition is satisfied, the other is guaranteed to be satisfied as well, and vice versa.

For example, let's consider the statement "An angle is a right angle if and only if it measures 90 degrees." We can express it as "An angle is a right angle <=> it measures 90 degrees." This means that if an angle measures 90 degrees, it is a right angle, and if it is a right angle, it must measure 90 degrees.

Using these symbols can help in expressing logical relationships and reasoning in a concise and precise manner. It's essential to understand the meaning of these symbols when learning mathematics and logical reasoning.