What is the distance between each data point and the regression line called?

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?