PLEASE HELPP MEE! A triangle with vertices A(2, 3), B(8, 5), C(4, 9) is rotated 270 CCW about the point (2,1) to form A’B’C’. What are the coordinates of A’, B’, and C’?

pic below

I think green green yellow green blue yellow purple yellow blue blue yellow yellow green blue yellow purple yellow blue blue yellow yellow purple yellow blue blue yellow yellow purple yellow yellow green blue yellow purple yellow blue blue green yellow yellow purple yellow blue blue yellow purple yellow blue blue yellow yellow purple yellow yellow blue blue green blue yellow purple yellow blue blue green blue yellow purple yellow blue blue purple blue yellow yellow purple yellow blue blue yellow yellow purple yellow yellow green blue yellow yellow purple yellow blue blue green yellow blue green blue yellow yellow green yellow blue blue yellow yellow purple yellow blue blue yellow yellow green yellow blue green blue yellow yellow green blue yellow purple yellow yellow purple blue blue yellow purple blue yellow blue green blue yellow yellow green blue yellow purple yellow blue blue green blue yellow purple yellow blue blue green blue yellow yellow purple yellow yellow green blue

I’m pretty sure the slope would be 1 since the x and y values increase by 1