11/6 is less than. 6 only goes into 11 once,, so it'd be 11/6
1/5÷2/3
to divide by a fraction flip the second and multiply
=1/5×3/2
multiply tops by tops and bottoms by bottoms
=3/10
so 3/10 cm per year
When a line is given in the form

The slope of the line is m. So, in this case, the slope of
is 1.
Given a slope
, you find the slope of a perpendicular line
by imposing

So, if the given line has slope 1, a perpendicular line has slope
given by

and thus 
So, we want a line with slope -1 and passing through (12,-1). Using the fomula

we get

Answer:
If y = 2x - 5, and x = 3z, then y = 6z - 5