Thread: Alebra Equation

Find an equation of variation in which y varies inversely as x and the following condition exists: 1) y=63 when x=1/7

is the answer:

A) y = 9/x
B) y= 2/x
C) y= 16/x
D) y = 7/x

Originally Posted by kharris82

Find an equation of variation in which y varies inversely as x and the following condition exists: 1) y=63 when x=1/7

is the answer:

A) y = 9/x
B) y= 2/x
C) y= 16/x
D) y = 7/x

varies inversely as beans that there is a constant
such that:

.

Now when , , so:

,

hence , and so:

,

which is answer A)

RonL