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y=mx +b is the equation for slope intercept form. y = the output of the equation m = the slope x = the input into the formula b = the y-intercept The slope represents the rate of change. This is because for every input, or x, you put into the equation, is changed by m. So the M portion of this equation would be the rate of change.
If you are talking about linear graphs, m refers to the gradient (aka slope or rate of change).
The rate of change for the linear (not liner) function, y = 2x +/- 3 is 2.
Yes. This is because the rate of change is equal to a (i.e. the slope is a). a never changes, so its linear.
Tell whether the equation -4x+ 2y = -2 represents a direct variation. If so, identify the constant of variation.