Question

You use a garden hose to fill a pool. If the water level rises 17 centimeters every 7 minutes and you record the data point of ​(21​,y), what is the value of​ y? Use slope to justify your answer.

Answer 1

Explanation:

If the water level rises 17 centimeters every 7 minutes, then (21, y)means that after, 21 minutes, it would have rise by y centimeters, using the equality postulate:

17cm = 7min

y = 21min

Cross multiply

7y = 21*17

y = 21*17/7

y = 3*17

y = 51cm

Hence the value of y is 51