What's the rule of the straight line of a function moving left and right

What's the rule of the straight line of a function moving left and right

In a word: left plus right minus
That is: move left with a plus sign; move right with a minus sign
Let the first order function equation be y = KX + B
For any positive number C
Y = K (x + C) + B, which means that the original line moves C units to the left;
Y = K (x-C) + B, which means that the original line moves C units to the right
Of course, when the slope does not exist, the movement law is obvious, which will not be explained in detail here
If you don't understand, please ask

______ &Nbsp; yes______ Movement creates an electric current______ The direction of directional movement is the current direction

Formation of current: current is formed by directional movement of charge; direction of current: in physics, the direction of directional movement of positive charge is defined as the direction of current. So the answer is: charge; directional movement; positive charge