The sum of a number and and 4.5 is 8.2

Describe the relationship between the angles of similar triangles and the sides of similar triangles

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.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.