Question

Y varies directly with X and has a constant rate of change of 6.

When the value of Y is 11, then the value of X could be _____.


equal to zero, less than 2, or equal to 6.

Answer 1

The rate of change is like the slope. Here is a reference to what a constant rate of change is.

http://ecommunity.pwsd76.ab.ca/mod/tab/view.php?id=29489

Now think about that, if the y, or output of the function, is 11, then what x with a slope of x would make something 11?

Answer 2

oops ...what x with a slope of 6....

Answer 3

You can also do this by trial and error with those three choices.
11=6(0)
11=6(something less than 2)
11=6(6)

Which of those makes the most sense? That is what they are asking.