Suppose that y varies directly with x and y=3 when x=9. What is y when x=18

Question

Emma Drake

Mathematics

27 May, 13:20

Suppose that y varies directly with x and y=3 when x=9. What is y when x=18

+3

Answers (2)

Know the Answer?

Camryn Stevenson · Answer 1

Camryn Stevenson 27 May, 13:33

0

Answer: 6

hope it's right

Pinky · Answer 2

6

Step-by-step explanation:

y varies directly with x means:

y = kx

Given that y = 3 when x = 9:

3 = 9k

k = 1/3

Therefore:

y = 1/3 x

When x = 18:

y = 1/3 (18)

y = 6