What happens to the value of the expression
le="\frac{5}{x} +5" alt="\frac{5}{x} +5" align="absmiddle" class="latex-formula"> as 
decreases from a large positive number to a small positive number?
A. it increases :T
B. it decreases :T
C. it stays the same :T
A. it increases :T
B. it decreases :T
C. it stays the same :T
1 answer:
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Focus of the parabola is (-5,5) and directrix is y = -1.
Let's assume a point (x,y) on parabola.
According to definition of parabola, the distance between point (x,y) and focus (-5,5) would be same as the distance between the point (x,y) and directrix y = -1.
Hence, option D is correct, i.e. f(x) = one twelfth (x + 5)2 + 2.