When the value of a dependant variable decreases at the independent variable increases the function is said to what makes this true

When the value of a dependent variable decreases as the value of an independent variable increases, the function is said to be a decreasing function.

If we graph such a function, as x goes from 0 to the right (getting larger), the y value will decrease; we would be able to physically see the graph decrease.

The correct answer would be the fourth choice

The slope of the function is 0.5.