Answer:

Step-by-step explanation:
Given
Represent point A as thus;

Required
Determine the new position of A, when rotated counterclockwise
The new position will be denoted as A'
When a point is rotated counterclockwise, we start by switching the positions of x and y as follows:

Then, y is negated to give A'

R(9,0)
S(8,-4)
T(7,4)
V(6,0)
Answer:
7 1/6
Step-by-step explanation: