1. ## range

I guess what would really help is if someone could define range for me.
I thought range was all y cordinates, so for this graph:

I guessed range was (-1, 2)

2. Originally Posted by md56
I guess what would really help is if someone could define range for me.
I thought range was all y cordinates, so for this graph:

I guessed range was (-1, 2)
The range is [-1, 2] (unless the y-coordinate of the minimum turning point is less than -1, in which case I don't see how you'd be expected to know what the value is). Square barckets include the endpoint, round brackets do not. The endpoints are included because they are labelled on the graph with a closed circle rather than an open circle.

3. I changed my parentheses to brackets and my answer was still incorrect.
Algebra kills me.
It really kills me.

4. Originally Posted by md56
I changed my parentheses to brackets and my answer was still incorrect.
Algebra kills me.
It really kills me.
I feel your pain (actually I don't but I thought I'd say that to make you feel better).

For the given question and graph, [-1, 2] is the reasonable and correct answer. Unless you're meant to enter it as $\displaystyle -1 \leq y \leq 2$. I suggest you flag this question with your instructor for further clarification.

5. Algebra punches me in the face and stabs a dagger through my heart. It spits in my eyes and induces gastrointestinal distress.
I have notified my instructor, thanks for looking.