The graph of which function is decreasing over the interval (-4, ∞) ?

f (x) = (x + 4) 2 + 4

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

f (x) = (x - 4) 2 - 4

f (x) = - (x - 4) 2 - 4

Question

Mathematics

Jerome Livingston

3 March, 07:16

The graph of which function is decreasing over the interval (-4, ∞) ?

f (x) = (x + 4) 2 + 4

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

f (x) = (x - 4) 2 - 4

f (x) = - (x - 4) 2 - 4

+3

Answers (1)

Know the Answer?

Jonathan Rubio · Answer 1

Ok, logic

all of them are parabolas

1st and 3rd are opening up, so they defenitely increase, so no

decraseing

the vertex hs to be be at x=-4

y=a (x-h) ^2+k

h has to be - 4

y=a (x+4) ^2+k

the answer is 2nd one or f (x) = - (x+4) ^2+4

The graph of which function is decreasing over the interval (-4, ∞) ?f (x) = (x + 4) 2 + 4f (x) = - (x + 4) 2 + 4f (x) = (x - 4) 2 - 4f (x) = - (x - 4) 2 - 4

The graph of which function is decreasing over the interval (-4, ∞) ?

f (x) = (x + 4) 2 + 4

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

f (x) = (x - 4) 2 - 4

f (x) = - (x - 4) 2 - 4