Select the best possible first step to solving the system by first illuminating the Y variable 4x - 5y = 4 3x + 2y =-20

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.