For you to do area it is length times width.
So we need have to understand that if we were to solve this, our answer would be 7 less than 'p' with that information we get p-7.
The slope is the rise over run. Basically, any line has a constant increase. If you are looking at a line on a graph and each point it meets at is 1 up and 1 over, the slope is 1. Say the line goes up two and over one for each time it meets an actual point, the slope would be 2. If it is 1 up and 2 over, it would be 1/2.
