The amount of money spent at the gas station
varies directly with the number of gallons
purchased When 1 1.5 gallons of gas were
purchased the cost was 37.72 How much would 8 gallons of gas cost

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