Please help me with 6-7 / 10 points

6) Axis of symmetry x=1. Vertex at (5,1)

7) Axis of symmetry x=1. Vertex at (1,2). y-intercept at y = -1

Step-by-step explanation:

There is an equation to find the axis of symmetry of a quadratic function and is given by:

Knowing that the standard form of a quadratic equation is:

The axis of symmetry is:

(1)

(6)

The quadratic equation of the first problem is:

Then, using equation (1) the axis of symmetry will be:

We need to use this value of x to find the vertex;

The vertex is (5,1)

Therefore, we disagree with Ahmed. The axis of symmetry is x = 1 and the vertex is in the point (5,1).

(7)

We can use the same method here. The function is:

The axis of symmetry is:

The vertex is:

So the vertex is (1,2)

We need to evaluate the function at x = 0 to get the y-intercept value.

Therefore, the y-intercept is at y = -1.

I hope it helps you!

ab will be equal to

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b