How many solutions does this linear system of equations have

-3x+y=4
9x-3y=-12​

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

What additional information could be used to prove abc =mqr using sas? check all that apply.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)