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# Algebra/aLGEBRA

Question
I need help finding the value of y

f(x)=3/4x +7

That looks like it is really to be written as f(x) = 3x/4 + 7 or f(x) = (3/4)x + 7
to ensure that the x is in the numerator of the fraction.

The function f(x) is used in place of y, so we have y = 3x/4 + 7.
Subtracting 7 from both sides gives y - 7 = 3x/4.
Multiplying both sides by 4/3 gives (4/3)(y-7) = x.
Turning the equation around gives x = (4/3)(y-7).

This can be rewritten as x = 4(y-7)/3 or x = (4y-28)/3 or x = 4y/3 - 28/3.

The answer book should have it in one of these forms.

Algebra

Volunteer

#### Scott A Wilson

##### Expertise

Any algebraic question you've got. That includes question that are linear, quadratic, exponential, etc.

##### Experience

I have solved story problems, linear equations, parabolic equations. I have also solved some 3rd order equations and equations with multiple variables.

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Documents at Boeing in assistance on the manufacturiing floor.

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MS at math OSU in mathematics at OSU, 1986. BS at OSU in mathematical sciences (math, statistics, computer science), 1984.

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Both my BS and MS degrees were given with honors.

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Students in a wide variety of areas since the 80's; over 1,000 of them have been in algebra.