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For a given input value 
x, the function 
f outputs a value 
y to satisfy the following equation.

-5x-4y=-8
Write a formula for 
f(x) in terms of 
x.

f(x)=

For a given input value xx, the function ff outputs a value yy to satisfy the following equation.\newline5x4y=8-5x-4y=-8\newlineWrite a formula for f(x)f(x) in terms of xx.\newlinef(x)=f(x)=

Full solution

Q. For a given input value xx, the function ff outputs a value yy to satisfy the following equation.\newline5x4y=8-5x-4y=-8\newlineWrite a formula for f(x)f(x) in terms of xx.\newlinef(x)=f(x)=
  1. Isolate variable y: Isolate the variable y in the equation 5x4y=8-5x - 4y = -8 to solve for f(x) in terms of x.\newlineWe add 5x5x to both sides of the equation to get 4y=5x8-4y = 5x - 8.
  2. Divide by ext{4-4}: Divide both sides of the equation by ext{4-4} to solve for ext{y}.\newlineDoing this, we get ext{y} = \frac{(55 ext{x} - 88)}{ ext{4-4}}.
  3. Simplify equation for y: Simplify the equation for y.\newlineWe can simplify the equation to y=5x4+2y = -\frac{5x}{4} + 2, since dividing both terms by 4-4 gives us y=54x+84y = -\frac{5}{4} \cdot x + \frac{8}{4}.
  4. Write function f(x): Write the function f(x) in terms of x.\newlineSince y is the output of the function f for the input x, we can write f(x)=54x+2f(x) = -\frac{5}{4}x + 2.

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