An number multiplied by zero is zero. This is because you are essentially saying that 1,000 0 times is zero.
2x - 2y = -4
-3x -3y = 0
_____________________
-1x - 5y = -4
b = - 4
slope m = (0 + 4)/(4 - 0) = 4/4 = 1
equation
y = x - 4
My teacher taught me to make an imaginary decimal and 0 at the beginning of the number and then move the decimal to the end of the number... idk that may be the wrong way to do it but you can try :/
