Question

How do you find the constant of variation when y=-(2/3) and x=3

Answer 1

`y=-(2)/(3);\ x=3\\\\kx=y\\\\3k=-(2)/(3)\ \ \ \ /:3\\\\k=-(2)/(9)`

Answer 2

You can't. If you think about the straight line on a graph, those numbers
describe a single point that the line goes through, and they don't tell you
anything about the slope of the line, or where it crosses the x-axis or the
y-axis. So I don't think you can tell the constant of variation from one point.