Take LCD of 6 and 3 = 6 is the lcm
5/6 -2/6n
(5-2n)/6.
Now, what number can be multiplied to the right side of the equal sign to get the value of P
The answer is 1/6 as the left side is divided by 6, so multiply the right side by 1/6 to make it equivalent.
I believe it's always a parallelogram??
Point slope form follows the equation y-y₁=m(x-x₁), so we want it to look like that. Starting off with m, or the slope, we can find this using your two points with the formula

. Note that y₁ and x₁ are from the same point, but it does not matter which point you designate to be point 1 and point 2. Thus, we can plug our numbers in - the x value comes first in the equation, and the y value comes second, so we have

as our slope. Keeping in mind that it does not matter which point is point 1 and which point is point 2, we go back to y-y₁=m(x-x₁) and plug a point in (I'll be using (10,5)). Note that x₁, m, and y₁ need to be plugged in, but x and y stay that way so that you can plug x or y values into the formula to find where exactly it is on the line. Thus, we have our point slope equation to be

Feel free to ask further questions!