No calculator is allowed for the following problem. Water is pumped into a tank at a rate of R(t) = 8v2t gallons per minute over the interval 0 sts 8. Water leaks out of the tank at a constant rate of 2 gallons per minute. The tank originally contains 10 gallons of water and can hold 200 gallons. d) Assume water continues to be pumped into the tank and leaks from the tank at the given rates after t = 8 minutes. Write, but do not solve, an equation that gives the time k at which the tank reaches its capacity.

I am trying to figure out how to Graph the equation y=5x 2. It does not make sense to me how to get the values for X and Y; thus to get the ordered pairs to then graph.  I am completely lost.   When I see examples, it looks like random numbers are chosen for X and Y.

What would the ordered pair represent in the context of the problem.