Question

Please help. suppose y varies directly with x. if y = 6 when x = 2, find y when x = 12

Answer 1

y varies directly with x means you can set up an equation that looks like:
y = kx

we know y = 6 when x = 2

first, you need to solve for k

Answer 2

k = 3 right ?

Answer 3

@blurbendy

Answer 4

yes

now it asks us to find y when x = 12
and we know k, so we have:

y = 6(12)

Answer 5

72

Answer 6

yup, good job

Answer 7

now i m not sure about the answer

is it

a. 1/4
b.1/3
c.3
d. 4

Answer 8

@blurbendy

Answer 9

oops, we said k = 3, not 6

so

y = 3(12)

Answer 10

36