You can just use the tn formula to solve this tn= t1 + (n-1)d
Answer:

Step-by-step explanation:
See attachment 1. This is the formula to use.
There are two numbers, so n=2. Plugging them into the formula, you get
![\sqrt[2]{6*\frac{1}{2}} \\](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7B6%2A%5Cfrac%7B1%7D%7B2%7D%7D%20%5C%5C)
Now, putting a 2 in front just means we're finding the square root, so I'll get rid of it. Then, just do the calculation.

The answer is A.
We have to find the difference between the cooridants.
1/2-2= -1 1/2 = -3/2
3-3/4 = 2 1/4 = 9/4
We then divide 9/4 by -3/2 (9/4 times -2/3) and we get -18/12 if we divide the top and bottom by 6, we get -3/2.