Write the equation of a line in slope intercept form given a slope of -3 and y-intercept
of 12.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

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.