Question

4. Identify the function in which y varies directly with x.y = 2x - 2y = 2x + 2y = Oxy = x

Answer 1

ANSWER

y = x

EXPLANATION

We want to identify the function in which y varies directly with x.

A direct variation is one in which y relates to x in the form:

y = kx

where k = constant of variation

The only one in which this is shown is:

y = x

where k = 1

So, the answer is Option D.