Need answer within an hour. Please dont write just anything many points will be rewarded or brainlist .

Me asap! what is the slope of this line? enter your answer in the box.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.