Question

Variable y varies directly with variable x, and y = 4 when x = 7.
What is the value of x when y = 12?

Answer 1

@silveralchemist09

Answer 2

okay like before y=kx since it is directly varying now put values of y and x to find k which is constant of proportionality

4=k7
4/7=k

now y=4/7x
12=4/7x
x=21 ans

Answer 3

Y=kx
4=7k
k=4/7
12=4/7x
12*7/4=x
x=21