PLEASE HELP ME ON THIS

A

Step-by-step explanation:

In one hour Marty walked three miles..He then stayed there because the line didn't move. If he had walked three more miles, the graph would have been moving up and instead of a horizontal line it would have been a diagonal line .

How you know he came home after 4 hours because right at five hours the line went down to 0 miles from his home. Which means he was at his home.

I hope this helps!

Remember that the vertex form of a parabola is where is the vertex of the parabola.

Now, to find the vertex of the parabola, we are going to use the vertex formula:

For a quadratic of the form , the vertex is given by:

in other words, we find by evaluating the function at

We know form our quadratic that and , so let's use our formula to find :

Now we can evaluate our function at to find :

Now, we can rewrite our parabola in vertex form:

, , and

We can conclude that the correct answer is: y = 6(x + 1)2 – 16