A triangle with vertices (-1,1), (2, -1), and (3,0) is translated using the rule x + 2, y - 6). What are the coordinates of the
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It is given that z varies directly with x and inversely with the square of y so it follows:
It is also given that z=18 when x=6 and y=2 so it follows:
So the equation of variation becomes:
Therefore the value of z when x=7 and y=7 is given by:
Hence the value of z is 12/7 or 1.7143.