Michael has a water pump that will pump water at the rate of 5 gallons per minute. Use a direct variation formula to determine h
2 answers:
Answer: It will remove 100 gallons for water in 20 minutes.
Step-by-step explanation:
The formula use for direct variation :-
, where k is the constant rate of change.
Given : Michael has a water pump that will pump water at the rate of 5 gallons per minute.
Let x be the number of minutes and y be gallons of water it will remove .
For x = 20 minutes and k= 5 in the above formula , we get
Hence, it will remove 100 gallons for water in 20 minutes.
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Answer: D) reflection across y = -x
Explanation:
When we reflect over y = x, we basically swap x and y. So for instance, the point (3,1) becomes (1,3).
When reflecting over y = -x, we will do the same thing but we'll make each coordinate swap in sign from positive to negative (or vice versa). The rule for reflecting over y = -x is
So if we apply that rule to point A(3,1) then it becomes A ' (-1, -3).
Similarly, B(1,5) moves to B ' (-5, -1)
Finally, C(6,9) becomes C ' (-9, -6)