Twelve friends go out for dinner and the food and beverage bill reaches £ 120. 2 The friends decide to add a tip 5% over this total if they divide the expenses equally between them. How much does each friend pay? pound​

That is the answer to your question

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for

The answer is 109 times per second