Question

PLEASE SHOW WORK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

x y
7 11
8 13
9 15
10 17

Answer 1

Not a direct variation

Explanation:

The formula for direct variation is

y =kx

Rewriting

y/x =k

Substituting points in

11/7 =k =1.571428

13/8 =k =1.625

Since the values of k are not equal, this is not a direct variation