Question

The value of y varies directly with x. If x = 3, then y = 21. What is the value of x when y = 105?
F 3/5
G 1 2/3
H 7
J 15

Answer 1

Answer:

J

Step-by-step explanation:

$y \alpha x \\ \frac{y}{x} = k \\ \frac{21}{3} = \frac{105}{x} \\ x = 15$