completely drained after 8 minutes,

graph the relationship between the amount of water left in the tub (in liters) and time (in minutes).

500

water (liters)

450+

400+

350 |

300+

250+

200+

150+

100 +

50

time minutes)

Let x be time, y be volume

(0,62.5) and (8,0) are the coordinates basically the intercepts

Gradient = 62.5-0/0-8= -7.8125

y=-7.8125x+62.5

(0,62.5) and (8,0) are the coordinates basically the intercepts

Gradient = 62.5-0/0-8= -7.8125

y=-7.8125x+62.5

y = -7.8125x + 62.5

Step-by-step explanation:

x represents the number of minutes

y represents the amount of water left

When x=0 , y= 62.5 so its (0,62.5)

When x= 8, y=0 so its (8,0)

Now we frame equation using y=mx+b

(0,62.5) is the y intercept , the value of b= 62.5

So equation becomes y = -7.8125x + 62.5

Graph is attached below

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