Answer:
<em>Answer to (4+5): </em>(0,0)
<em>Answer to 6: </em>0
Step-by-step explanation:
<em>(4+5 Explanation)</em>:
We can start to imagine the graph of in our head.
If we have a positive value of x, then y will be equal to x.
If we have a negative value of x, then y will be the opposite of x (since the absolute value of a negative is a positive).
This means that the graph will look a bit like this, changing at the point (0,0).
\/, it would look like a downward facing arrow. This means the vertex is at (0,0).
<em>6 Explanation</em>:
If we know the value of , we can substitute it into the expression as 5.
Hope this helped!