In the equation 2x â€“ cy = 18, c is a constant. If the value of y is 2 when x is 6, what is the value of x when y is 7 ?	Select the correct option
A) âˆ’9/2
B) -4
C) -3/2
D) 4
E) 9/2
2x - cy = 18   x=6, y=2;   12-2c=18   c=-3   2x-cy=18   when y=7, c=-3, x=   x=-3/2   ANSWER:-3/2
<result>C</result>
In the equation 2x â€“ cy = 18, c is a constant. If the value of y is 2 when x is 6, what is the value of x when y is 7 ?