Question

The curve produced by the water coming from a hose is sketched onto a graph with zeros at 1 and 5. The point (4,

Answer 1

Answer

answer A and C are right

Answer 2

Answer:

A and C.

Step-by-step explanation:

From the problem, we deduct that the function has to be quadratic, because it's mention two zeros, which is proper of a polynomial expression with grade 2.

So, we can say that:

$h(x)=a(x-0)(x-5)$

Because, 5 and 0 are roots of the expression.

Also, we know that the point $(4,1)$ is on the curve, this means:

$h(4)=1$

Replacing this relation in the first expression, we have:

$1=a(4-5)$

$1=a(-1)\\a=-1$

So, the expression would be:

$h(x)=-1(x-0)(x-5)$

$h(x)=-x(x-5)$

$h(x)=-x^{2} +5x$

If we graph, we could get the vertex easier.

You can see in the image, that the vertex is at x = 2.5

Therefore, the option C is the answer.

However, the first option has this function:

h(x) = –0.25(x)(x – 5).

Which also can be solution, because, if we try x = 4:

h(4) = –0.25(4)(4 – 5)=1

Therefore, option A is also part of the answer.