Write a variation equation that relates the two variable. Then solve

1. Suppose Y varies directly as x, and y = 16 when x = 8. Find y when x = 16

2. The variable r varies inversely with s, the value of r = - 6/7 when s = - 7/8, find the value of s if r = 6

3. T varies directly proportional to c, r = 24 and c = 6, find c when T = 6​