Consider the function represented by 9x + 3y = 12 with x as the independent variable. How can this function be written using function notation? f(x) = x + 4

Question

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Answer 1

you have an equation which can be divided by three, to give 3x + y = 4 and then you may solve for y,

and rename it f(x) = -3x + 4.

 

This is your answer.