SOLUTION: The rational function has a y-intercept of 7. What is the equation for this function. It shows it with a graph. There are two dotted lines. One is vertical the other is horizontal.

Algebra ->  Rational-functions -> SOLUTION: The rational function has a y-intercept of 7. What is the equation for this function. It shows it with a graph. There are two dotted lines. One is vertical the other is horizontal.      Log On


   

Question 835546: The rational function has a y-intercept of 7. What is the equation for this function. It shows it with a graph. There are two dotted lines. One is vertical the other is horizontal. They meet at point (-2,5) I don't know if that helps ;( I really need help!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'm guessing that the vertical asymptote occurs at x=-2 which means the function doesn't exist there so x%2B2 must be in the denominator.
The horizontal asymptote occurs at y=5.
SO the function looks something like,
f%28x%29=5%28%28x%2Ba%29%2F%28x%2B2%29%29
when x=0, y=7
f%28x%29=5%28%280%2Ba%29%2F%280%2B2%29%29=7
%285a%29%2F2=7
a=14%2F5
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f%28x%29=5%28%28x%2B14%2F5%29%2F%28x%2B2%29%29
highlight%28f%28x%29=%28%285x%2B14%29%2F%28x%2B2%29%29%29
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