Find the value of the argument with the function: y = -2.5x and takes the value -12

The function argument always takes the value x. Y takes the value of the ordinate, usually.

Therefore, in this problem, we need to substitute the number 12 instead of y in the equation. In the numerical version, it will look like this:

– 12 = – 2.5x

x = -12 / (- 2.5)

x = 4.8.

In the first step, we divided the number – 12 by the number – 2.5. At the same time, since both numbers with the “-” sign give a positive result when dividing. Therefore, the answer is with a “+”.

The answer to this problem is 4.8.