X-12 will give the other number
J is a fraction
Rock weighing 202 pounds on earth weighs 201j pounds on the moon.
They are using the point (2, 8) to write this equation. You know that because of the "y-8" in the equation, and also because it's bolded! lol. Anyways, what's missing is the slope and the x value from our point. The slope is -2. Find this by picking 2 points on the line and putting those into the slope equation. Use the bolded point and the x-intercept: (2,8) and (6,0):

. As stated earlier the x coordinate in the bolded point is 2. So our equation is y-8=-2(x-2). And there you Go!
The graph went left 1 and up 6. You could complete the square to find out or just graph it!
Hope this helps!