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Mathematics 7 Online
OpenStudy (anonymous):

A point moves along the line x+2y=2. Find (a) the rate of change of the y coordinate , given that the x-coordinate is increasing at the rate of 4 units per second; (b) the rate of change of the x-coordinate, given that the y-coordinate is decreasing at the rate of 2 units per second.

OpenStudy (anonymous):

need help

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