3.643 x 10^3
move the decimal in between the first and second number
However many times you move the decimal, that is you exponent.
You need to find the midpoint of the line. To get x coordinate you take (x1 + x2)/2 which is (-3+-7)/2 = -10/2 = -5. Same thing applies for y.
I could use the points so if you want to mark this as helpful that would be cool :)
Do you have a picture to go with this?
