Dependant variables is when a variable A cannot be de-coupled from variable B, as the value of one, affects the other. On a graph, Y depends on X’s value to have its own.
Independant variables are the opposite: Variables that are legitimately not affected by one another for their values. A pair of dice in a dice roll is an example of this: Each die doesn’t care what the other die landed on, it will land on whatever it lands.
A coefficient is a value by which you multiply a variable to get the desired result. In the expression “y = 2x”, the coefficient, 2 is the “slope” of the line: Each Y is exactly twice as big as one X.
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