Question

Assume that y varies inversely with x. If y = 7 when x = -3, find y when x = 7.

Answer 1

17 I think

Answer 2

\[\frac{ x _{1} }{ x _{2} }=\frac{y _{1} }{y_ 2 }\]

Answer 3

that is the inverse variation formula..^^^ plug in the values you were given, so what is you're answer/

Answer 4

\[\frac{ -3 }{ 7 }\frac{ 7 }{ y }\]

Answer 5

i think

Answer 6

yeah, so what is y? And I hope I am right... someone correct me if I'm wrong!

Answer 7

Y = -21/x is but one of an infinite number of solutions to this.

To solve the generalised solution y = a/x + b for a and b, you need 2 points.

Answer 8

-21 ? the other answer choices i have are y = -7/3 and y= -3