Write equation to show x=number of hours reservoir is draining at rate of 25 gallons per hour, y=the number of gallons in reservoir is 200

y = 200 - 25 x

The equation can be written as:

y = 200 - 25x

Here, y represents the number of gallons in the reservoir, x represents the number of hours the reservoir has been draining at a rate of 25 gallons per hour, and 200 is the initial number of gallons in the reservoir.

To represent the relationship between the number of hours the reservoir is draining at a rate of 25 gallons per hour (x) and the number of gallons in the reservoir (y), we can use the equation:

y = 200 - 25x

In this equation, 200 represents the initial number of gallons in the reservoir. As the reservoir continuously drains at a rate of 25 gallons per hour, the number of gallons decreases by 25x, where x is the number of hours the reservoir is draining. To find the current number of gallons in the reservoir at a specific time, substitute a value for x into the equation.