Which is the graph of f (x) = - (x + 3) (x + 1) ?

Question

Samir Petty

Mathematics

9 January, 20:49

Which is the graph of f (x) = - (x + 3) (x + 1) ?

+1

Answers (1)

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Juliet Boyle · Answer 1

Step-by-step explanation:

x intercepts are - 3,-1

f (x) = - (x²+x+3x+3) = - (x²+4x) - 3 = - (x²+4x+4-4) - 3 = - (x+2) ²+4-3

or f (x) = - (x+2) ²+1

vertex is (-2,1)

so it is an inverted parabola with vertex (-2,1) and x-intercepts (-3,0) and (-1,0)