1.) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

x y

8 11

16 22

24 33

a.) yes; y=2.75x

b.) yes; y=0.6875x

c.) yes; y=1.375x

d.) no; y does not vary directly with x

Graph y=x^2-6x-16 apex

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