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kozerog [31]
3 years ago
12

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

Mathematics
2 answers:
insens350 [35]3 years ago
7 0

This can be solved by the method of elimination.

We have been given that the function should decrease over (-4,∞)

So, since its between -4 and ∞ , we can eliminate option A and C. This is because options A and C are actually increasing over (-4,∞) and not decreasing.

So, this leaves us with options B and D. Next we find the vertex of the two functions. The vertex of Option B, that is -(x+4)^2 +4 lies at the point (-4,4) and decreases with x over the interval (-4,∞).

Whereas the option D, -(x-4)^2+4 has the vertex at (4,4) and hence the interval is not between -4 and infinite.

Hence Option B, -(x+4)^2 +4 is the answer asthe function is decreasing over the interval (–4, ∞)

padilas [110]3 years ago
3 0
I think second must b the answee
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