Question

Which equation is a direct variation function?

y = x
y = 4
y = x2
y = x + 2
y= 1/4 x + 2

Answer 1

y = x

Explanation:

I did the assignment hope it helps (A like helps me if you have time)

Answer 2

y=x and y=1

4 x

Explanation:

We know,

'Direct Variation function' is the function where two quantities vary directly i.e. variables x and y are said to be directly varying if 'y=kx' where k is the constant of variation.Thus, from the options, we see that the function,

y=x

is varying directly with the constant of variation i.e. k = 1.

y= 1

4 x

is also varying directly with constant k=1

4