Determine whether y varies directly with x, If so, find the constant of variation k and write the equation.
x y
4 6.4
7 11.2
10 16
13 20.8
can someone plz help me

Question

Determine whether y varies directly with x, If so, find the constant of variation k and write the equation. 
x y 
4 6.4 
7 11.2 
10 16 
13 20.8 
can someone plz help me

triciaal · Answer

if y varies directly with x then when x increases y increases and when x  decreases then y decreases . in addition to that the amount of change is constant for any set (x, y)

hayhay12345 · Answer

so if y increases by three then so will x?

triciaal · Answer

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