Which quadrilateral must be a trapezoid?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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.