Determine whether the equation defines y as a linear function of x. If so, write it in the form y = mx + b. x = 3y - 9

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Rearrange the equation x = 3y - 9 into the form y = mx + b

3y = x + 9

Divide by 3:

y = 1/3x + 3

since we were able to put the equation in the y = mx + b form it IS a linear function.

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