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6 April, 23:36

What is the rate of change for f (x) = - 0.9x+665

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  1. 6 April, 23:47
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    The rate of change is - 0.9.

    Since the function f defined by f (x) = - 0.9x + 665 is in slope-intercept form

    f (x) = mx + b, we identify the coefficient on x to be the slope. And the slope is the rate of change.

    For every one unit increase in x, y decreases by 0.9 units.
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