Question

he variable y varies directly with the variable x.

A 2-column table with 3 rows. Column 1 is labeled x with entries 2, 10, 14. Column 2 is labeled y with entries 3, 15, blank.

If the value of x is 14, what is the value of y?

Answer 1

Direct variation means y = kx. Using (2, 3): k = 3/2 = 1.5 (check with (10,15): k = 15/10 = 1.5).
So y = 1.5x. For x = 14: y = 1.5 × 14 = 21.