Question 30
If on increasing a,b decreases in such a manner that___remains ___and positive, then a and b are said to vary inversely with each other.
If on increasing a,b decreases in such a manner that ab remains constant and positive, then a and b are said to vary inversely with each other.
Question 29
On increasing a,b increases in such a manner that ab remians___and postive, then a and b are said to vary directly with each other.
Question 55
When two quantities are related in such a manner that if one increases and the other decreases, then they always vary inversely.