Question

Can you copy the picture and put there answers in there?

Answer 1

Consider the given function,

`f(x)=-(x-4)(x+1)`

This is a quadratic function in factor form.

Consider that the function is zero when alteast one of the factors becomes zero,

`\begin{gathered} y=0 \\ -(x-4)*(x+1)=0 \\ x-4=0\text{ or }x+1=0 \\ x=4\text{ or }x=-1 \end{gathered}`

Thus, the zeroes of the quadratic function are 4 and -1.

It means that the function passes through the points (-1,0) and (4,0).

Consider that the vertex of a parabolic function is given by,