Answer:
14 2/3
Step-by-step explanation:
.....................
For this case we have the following equation:

Deriving we have:

We match zero:

We clear the value of x:

Then, we substitute the value of x in the equation of the parabola:

Thus, the vertex of the parabola is the ordered pair:
Answer:
The vertice is:
The line would intersect with the y-axis at (0,0)
1 + 1x
OR
1 + x
They mean the same thing! Hope this helps!