Can I see the picture it’s blurry
The graph has to be a line. If it isn’t then it’s not a graph. The x values becomes numbers.
If this is for a rectangle the volume of it would be 39/2 or 19 1/2
X will equals -5 because 2-(-5)=3
To multiply a number, simply take a number (Let's say 4) and another number (Let's say 3). If you multiply 4 by 3, you are simply taking the number 4, and adding it to itself 3 times (4 + 4 + 4).
I hope this makes sense, please tell me if you need some more information.
Hope this helps!