The lines shown below are perpendicular. If the green line has a slope of 2/5, what is the slope of the red line?

Use set builder notation to represent the following set: { -3, -2, -1, 0}

What is the slope of the line that contains the points (-2,1) and (0,-3)

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.