A submarine starts at 45 meters below sea level. The submarine then changes its position at a rate of -6 meters per minute. What is the submarine's position after 7 minutes? help plz

-87

Step-by-step explanation:

-45+ -6*7

-6*7=42

-45+ -42=

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:

b

step-by-step explanation: