Henry is filling up his fish tank with water at a constant rate. At 2 minutes the water level is 16 cm. At 8 minutes the water level is at 34 cm.

What was the water level at 0 minutes? explain

8

Step-by-step explanation:

Divide 16 and 2 and 2 goes into 16, 8 times. That means your answer is 8

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

step-by-step explanation: