Final answer:
To rotate the point (1,1) by 180 degrees, the new coordinates will be (-1,-1).
Step-by-step explanation:
To rotate the point (1,1) by 180 degrees, we need to find the coordinates of the new point after the rotation.
To rotate a point 180 degrees about the origin, we can use the following formulas:
x' = -x
y' = -y
Using these formulas, we can determine that the new coordinates after the rotation will be (-1,-1).