Question

Please help me! Read the screenshots and give a detailed answer pls, I honestly have tried this problem like 4 times and still can't get it right. 100 points and brianly to the best answer <3

Answer 1

2.

(X1×X2)/(X1+X2);(Y1×Y2)/(Y1+Y2)

(-3x9)/(-3+9);(7x-1)/(7+-1)

=use calculator