Solve for y you will get brainliest

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

What does the sign of the slope tell you about a line?