Ageometric figure is a set of a finite number of points

How do you use the elimination method for this question? explain, because i really want to understand!

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Need match the functions with correct transformation. f(x) = -3x f(x) = |x-1|+3 f(x) = √(x+3) 1/2x² f(x) = (x+1)²-3 4|x| 1. compress by a factor of 1/2 2. stretch by a factor of 4 3. shift to the left 3 4. shift to the left 1 5. shift up 3 6. reflection