P(7,6), Q(1,6), R(4,2)
We have PQ parallel to the x axis. We'll call that the base,
b = 7 - 1 = 6
The altitude is then the y difference h = 6 - 2 = 4
The area is 
Answer: 12 square units
In general we can use the shoelace formula for the area of any polygon given coordinates. We write the points like this:
(7,6), (1,6), (4,2)
(1,6), (4,2), (7,6)
The area is then half the absolute value of the sum of the cross products:

Answer:
O'(-2,-2) and U'(0,0).
Step-by-step explanation:
ΔTOY has coordinates T (−3, 4), O (−4, 1), and Y (−2, 3).
It is given that a translation maps point T to T' (−1, 1).
The x-coordinate increased by 2 and y-coordinate decreased by 3. So, the rule of translation is

The coordinates of O' and Y' under this translation.


Therefore, the coordinates of O' and Y' under this translation are O'(-2,-2) and U'(0,0).
A monomial has one term. Therefore, A is the only one with one term.