2. For the data in the table, does y vary directly with x? If it does, write an equation for the direct
16|4
32|16
48|36
A yes: y = 2x
B yes: y = 4x
C yes: y = 8x
D no; y does not vary directly with x.
really?
Does 16 = 2*4? no ... 4*4? yes
Now, does 32 = 4*16? no
so, D