Question

Will medal and fan. If x varies directly as y, and x=42 when y=7, find x when y=3

Answer 1

all i need is the set up

Answer 2

equation for direct variation
\[\huge\rm y=kx\] where k is constant of variation.

Answer 3

substitute x and y for their values solve for k

Answer 4

Ok so you are going to do this:
42/7 = x/3
Now cross multiply
42*3 = 7x
Solve for x

Answer 5

okay that makes sense. thank you

Answer 6

126 = 7x
x = 18
Medal? Please