Question on: JAMB Mathematics - 2014

y varies directly as w2. When y = 8, w = 2. Find y when w = 3

A
18
B
12
C
9
D
6
Ask EduPadi AI for a detailed answer
Correct Option: A

(y \propto w^2)

y = kw2

8 = k(2)2

8 = k(4)

k = 8/4

k = 2

Thus y = 2w2

When w = 3, y = 2(3)2

y = 2 x 9 = 18

Add your answer

Notice: Please post responsibly.

Please share this, thanks!

No responses