sergiochacara370 sergiochacara370

16-02-2020
Mathematics

contestada

The value of y varies directly as the square of x and y=36 when x=3. What is y when x=4?

Respuesta :

folarin7 folarin7

17-02-2020

Answer: y = 64

Step-by-step explanation:

y <> x² ----------------------- 1

y = kx² ----------------------- 2

36 = 3²k

36 = 9k

K = 36/9

= 4.

To find y when x = 4, we substitute for x in equation 2

y = kx²

y = 4²k

y = 16 x 4

y = 64

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