SOLUTION: Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. X Y 7 11 8 13 9 15 10 17

Algebra ->  Rational-functions -> SOLUTION: Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. X Y 7 11 8 13 9 15 10 17      Log On


   



Question 1146141: Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.
X Y
7 11
8 13
9 15
10 17

Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
If y varies directly with x then for some constant k,
y=kx. Do you find that to be the case here?
X      Y
7      11
8      13
9      15
10     17

Y=kX
k=Y%2FX

k=11%2F7
-
k=13%2F8?

Is this true? 11%2F7=13%2F8
Or is 11%2F7%3C%3E13%2F8?

What do you think?