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 5 ?  Choices
A) âˆ’9/2	B) -1	C) -3	D) 4	E) 9/2
2x - cy = 18   x=6, y=2;   12-2c=18   c=-3   2x-cy=18   when y=5, c=-3, x=   x=9/2   ANSWER:-1
<result>B</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 5 ?