The number of seahorses is 4 times the number of sea urchins. Write and solve an equation to find how many sea urchins there are in the aquarium.

Lets say there are 5 sea urchins. The number of sea horses is times 4. So 5 times 4 is 25.

So there are 25 sea urchins!

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:

believe it or not anna is correct good job anna give me a fist bump there u go gal