Question

if y varies directly as x, and y=9 when x=7, find y when x=14

Answer 1

i'm pretty sure it's 18 because 14 devided by 7 is 2 so 2 time 9 is 18

Answer 2

@kareng19

Answer 3

direct variatrion means

y = kx

so find k when y = 9 and x = 7

so

y = 7k

then find k.

then find y when x = 14 using the k value you found

y = 14k

Answer 4

so am i wrong? @campbell_st

Answer 5

well no it's correct....its a very obvious question

but to solve direct variation the steps are

1. find the value of k using given information.

2. then find the unknown using the value of k and any given information

Answer 6

oh okay