Write an equation for a rational function with:

Vertical asymptotes at `x = 1`  and `x = -3` 

`x`  intercepts at `x = 5`  and `x = 4` 

`y`  intercept at 6

`y ` =  

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Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question