If y varies directly with x, if y = 36 when x = -6, how do you find x when y = 54?
1 Answer
Jan 16, 2016
Explanation:
Let
Breaking down the question into parts:
If
if
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Consider equation (1)
Divide both sides by
But
Substitute values from (2) into equation (3) giving
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Using equation (1)