In this quetion we have to find the coordinate of point C on rotation by 180 degree about origin .
The rule for rotation by 180 degree about the origin is
[tex](x,y)-> (-x,-y)[/tex]
It means , the x and y coordinates become opposite. That is
The new coordinate of point C (-3,4) is
[tex](- (-3),-4) = (3,-4)[/tex]
And that's the required answer.
