When you know the equation to a line you may want to ask yourself a few questions. You may already know that the form of a line would be y=mx+b . When you have the equation already for the line you may want to consider how the line connects to the equation. For example, you may ask yourself what the b is in the line. You can also ask yourself how it got to be in that place or how you got to that answer or number.
    Sometimes I ask myself if that is the correct line. You can simply try to fit everything in by replacing the letters or variables with a point on that line. That usually checks if you are right or wrong. If you are right the equation will be correct, but if you are wrong then the equation will not equal the y. You can also ask yourself what of this equation helps me see what is on the line. Maybe you may want to imagine it when you see that equation, and if the one that you imagine is very different to the actual line, you may prefer to not do it your mind.
       Sometimes the actual equations make picture how it will be if you really understand what each variable plays in the equation. Ask yourself what is the y in my line, the b, the m, or even the x. All these questions are worth it.