Question 1197998
8.  y varies inversely as x,  15*3 = y*1,  y = 45
9.  p varies inversely proportional to q, 18*6 = 10q, q= 108/10 = 10.8
10. r varies inversely with w - 1, 
{{{(3/50)2 = r*9}}}, 
{{{ (3/25)/9 = r }}}, 
{{{3/(25*9) = r }}} = 1/75