Answer to this please

Rainwater is collected into two separate 400-gallon rainwater tanks. The tanks are drained when full and used to water local crops. The drainage of tank 1 can be represented by the equation y = 400 - 20x and tank 2 drainage can be represented by the equation y = 400 - 2* where x represents minutes and y represents gallons. Complete the table and plot the ordered pairs from each equation on the same graph. Determine which tank will completely drain first by. y = 400 - 20x (x, y) y = 400 - 2" (x, y) 0 2 4 6 8 8 400 300 200 100 2 4 6 8 10 12 14 X The equation has a constant rate where as does not have a constant rate. The tank which will drain first is Tank 1 or Tank 2