What is the image of the point (8.5) after a rotation of 180 counterclockwise about the origin

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?