If the p-value in a statistical test is less than or equal to the level of significance for the rest, do we reject or fail to reject h0?

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

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 are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?