Question 105783
Given the equation:
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{{{-8x - 5y = -45}}}
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To rewrite this equation as a function of x, begin by solving for y.  
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In this problem you need to get the term containing y on one side of the equation and everything
else on the other side. Start by getting rid of the term -8x on the left side. You can do
that by adding 8x to both sides. On the left side when 8x is added to - 8x, the two terms
cancel each other so the -8x disappears and you are left with:
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{{{-5y = 8x - 45}}}
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Now solve for y by dividing both sides by -5 which is the multiplier of the y term. This
division leads to:
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{{{y = 8x/(-5) - 45/(-5) = -(8/5)x + 9 }}}
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Now just replace the y with f(x). This leads to the answer:
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{{{f(x) = -(8/5)x + 9}}}
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Hope this helps you to understand the problem a little better.
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