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mixer [17]
3 years ago
14

WILL GIVE A BRAINLIEST!!

Mathematics
2 answers:
sergij07 [2.7K]3 years ago
4 0
If the vertex is at the maximum point they dy/dx=0 at that point...

dA/dx=-2x+4

dB/dx=-2x+8

dC/dx=2x-4

dD/dx=2x-8

So both B and D have a zero velocity at x=4, but only B is equal to 3 when x=4

B. is the correct quadratic with the vertex at (4,3)
scoray [572]3 years ago
3 0

Answer:

<h2>B.</h2><h2>  y=-x^{2} +8x-13</h2>

Step-by-step explanation:

We know that the vertex of the parabola is

V(4,3)

That means this points is being intercept by the parabola. In other words, the function that represents this parabola has to have this relation, when x=4, y=3.

So, you can observe that the second choice has a function that follows this relation. Let's see

y=-x^{2} +8x-13

So, for x=4

y=-(4)^{2} +8(4)-13\\y=-16+32-13\\y=3

Therefore, function B is the answer because it includes the vertex at its relation.

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