y = mx + b , point slope formula, y2 - y1 over x2 - x1

[Mao]

What I did for this, back in 1st year high school, was that I tried to practice everyday. Usually, there are problems at every chapter of a math book right? I'll solve one with the notebook open, the next problem, I set the notebook aside and rely on the solution I used in the previous problem and so on until it sticks in your head and you don't have to look at the previous problems that you have answered.