What does the author explain in this passage? Question 2 options:

The author explains the importance of bike safety, using helmets as an example.

The author explains the force of friction, using different kinds of music as examples.

The author explains the sport of soccer, using examples of current teams and players.

The author explains the idea of motion, using different sports as examples.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

3. dark matter

empty space could also be a simple vacuum