Tell whether the equation -4x+ 2y = -2 represents a direct variation. If so, identify the constant of variation.
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rate of change. :)
rate of change. :)
If the graph is a non-vertical straight line, then the rate of change is constant. If the line is curved, then the rate of change (slope) varies.
if a number can change randomly it is called a variable
The differentiation of a constant is zero because a constant value does not change with respect to the variable being differentiated. The derivative measures the rate of change of a function, and since a constant has no change, its derivative is zero.