Question 88511
Given:
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4x-6y=-30
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To write this as a function of x, solve for y and then replace y with f(x).
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Begin by getting the term containing y by itself on the left side.  To get rid of the 4x
term on the left side, subtract 4x (or add negative 4x) to both sides.  When you do that
you get:
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{{{-6y = - 4x - 30}}}
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divide both sides by -6, the multiplier of y, and you get:
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{{{y = (-4/-6)x - 30/-6 = (2/3)x + 5}}}
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Now replace the y with f(x) and you get:
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{{{f(x) = (2/3)x + 5}}}
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Hope this helps.