Find the constant of variation k for the direct variation
2x + y = 0

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9