Answer:
B
Step-by-step explanation:
Quadratic graphs are pretty weird. If it says (x-3)^2 is means x will shift to the right. It shifts to the left, so it is (x+2)^2, and goes down 3, so
(x+2)^2 -- 3
The point-slope form is:

So, here, you just plug in values:

It would be + 1 because remember, the '-' sign just means the opposite of, not subtraction in this case. Also, m = slope.
To subtract 7/10 by 1/2, you need to find the common denominator. In this case, the common denominator would be 10. Multiply 1/2 by 5/5, which gives you 5/10. Now you can subtract 7/10 and 5/10.
Once you finish subtracting, you should get 2/10. This answer can be simplified to 1/5.